Unfortunately I couldn't find source tarballs for previous 1.4 versions, 
but I don't have theese problems on encfs-1.3.2.
Here is a part of a logfile from encfs-1.4.1.1 when digikam hangs. 
The logfile is > 50MB and unfortunately I have no clue which part could be relevant.


00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (Context.cpp:119) no node found for /Pictures/digikam3.db-journal
00:18:25 (DirNode.cpp:734) created FileNode for /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (encfs.cpp:139) getattr /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA
00:18:25 (RawFileIO.cpp:191) getAttr error on /home/.poison/BVfTpoyEXXpvE,/O5IMaMWBWsDIaEdbye423sVuehBA: No such file or directory
00:18:25 (encfs.cpp:143) getattr error: No such file or directory
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
libulockmgr: recv short
00:18:25 (encfs.cpp:143) lock error: Input/output error
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
ulockmgr_server: fd 6 not found
00:18:25 (encfs.cpp:143) lock error: Input/output error
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
ulockmgr_server: fd 6 not found
00:18:25 (encfs.cpp:143) lock error: Input/output error
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
ulockmgr_server: fd 6 not found
00:18:25 (encfs.cpp:143) lock error: Input/output error
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
ulockmgr_server: fd 6 not found
00:18:25 (encfs.cpp:143) lock error: Input/output error
00:18:25 (encfs.cpp:139) lock /home/.poison/BVfTpoyEXXpvE,/GPM87ROCGVybOTZ1o1
00:18:25 (RawFileIO.cpp:129) open call for read only file
00:18:25 (RawFileIO.cpp:136) using existing file descriptor
...