I can see this under both i686/amd64
How to reproduce:
1. run lmms in terminal
2. shutdown lmms
3. then we can see below
*** glibc detected *** lmms: double free or corruption (!prev): 0x0000000002906af0 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7e626)[0x7fe7c4181626]
/usr/lib/lmms/ladspa/caps.so(_fini+0x48)[0x7fe775c1faf8]
/lib64/ld-linux-x86-64.so.2(+0xf92d)[0x7fe7c7de692d]
/lib/x86_64-linux-gnu/libc.so.6(+0x3b921)[0x7fe7c413e921]
/lib/x86_64-linux-gnu/libc.so.6(+0x3b9a5)[0x7fe7c413e9a5]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf4)[0x7fe7c4124774]
lmms[0x47d1a1]
======= Memory map: ========
00400000-005ab000 r-xp 00000000 08:01 1079973 /usr/bin/lmms
007aa000-007c3000 r--p 001aa000 08:01 1079973 /usr/bin/lmms
007c3000-007c6000 rw-p 001c3000 08:01 1079973 /usr/bin/lmms
007c6000-007d1000 rw-p 00000000 00:00 0
024a8000-08732000 rw-p 00000000 00:00 0 [heap]
7fe764000000-7fe764021000 rw-p 00000000 00:00 0
7fe764021000-7fe768000000 ---p 00000000 00:00 0
7fe768000000-7fe768021000 rw-p 00000000 00:00 0
7fe768021000-7fe76c000000 ---p 00000000 00:00 0
7fe76c000000-7fe76c021000 rw-p 00000000 00:00 0
7fe76c021000-7fe770000000 ---p 00000000 00:00 0
7fe771b6e000-7fe771b6f000 ---p 00000000 00:00 0
7fe771b6f000-7fe77236f000 rw-p 00000000 00:00 0
7fe77236f000-7fe772373000 r-xp 00000000 08:01 11814 /usr/lib/lmms/ladspa/vynil_1905.so
7fe772373000-7fe772572000 ---p 00004000 08:01 11814 /usr/lib/lmms/ladspa/vynil_1905.so
7fe772572000-7fe772573000 r--p 00003000 08:01 11814 /usr/lib/lmms/ladspa/vynil_1905.so
7fe772573000-7fe772574000 rw-p 00004000 08:01 11814 /usr/lib/lmms/ladspa/vynil_1905.so
7fe772574000-7fe772576000 r-xp 00000000 08:01 11808 /usr/lib/lmms/ladspa/tap_vibrato.so
7fe772576000-7fe772775000 ---p 00002000 08:01 11808 /usr/lib/lmms/ladspa/tap_vibrato.so
7fe772775000-7fe772776000 r--p 00001000 08:01 11808 /usr/lib/lmms/ladspa/tap_vibrato.so
7fe772776000-7fe772777000 rw-p 00002000 08:01 11808 /usr/lib/lmms/ladspa/tap_vibrato.so
7fe772777000-7fe772778000 rw-p 00000000 00:00 0
7fe772778000-7fe77277b000 r-xp 00000000 08:01 11823 /usr/lib/lmms/ladspa/tap_tubewarmth.so
7fe77277b000-7fe77297a000 ---p 00003000 08:01 11823 /usr/lib/lmms/ladspa/tap_tubewarmth.so
7fe77297a000-7fe77297b000 r--p 00002000 08:01 11823 /usr/lib/lmms/ladspa/tap_tubewarmth.so
7fe77297b000-7fe77297c000 rw-p 00003000 08:01 11823 /usr/lib/lmms/ladspa/tap_tubewarmth.so
7fe77297c000-7fe77297e000 r-xp 00000000 08:01 11804 /usr/lib/lmms/ladspa/tap_tremolo.so
7fe77297e000-7fe772b7d000 ---p 00002000 08:01 11804 /usr/lib/lmms/ladspa/tap_tremolo.so
7fe772b7d000-7fe772b7e000 r--p 00001000 08:01 11804 /usr/lib/lmms/ladspa/tap_tremolo.so
7fe772b7e000-7fe772b7f000 rw-p 00002000 08:01 11804 /usr/lib/lmms/ladspa/tap_tremolo.so
7fe772b7f000-7fe772b80000 rw-p 00000000 00:00 0
7fe772b80000-7fe772b83000 r-xp 00000000 08:01 11805 /usr/lib/lmms/ladspa/tap_sigmoid.so
7fe772b83000-7fe772d82000 ---p 00003000 08:01 11805 /usr/lib/lmms/ladspa/tap_sigmoid.so
7fe772d82000-7fe772d83000 r--p 00002000 08:01 11805 /usr/lib/lmms/ladspa/tap_sigmoid.so
7fe772d83000-7fe772d84000 rw-p 00003000 08:01 11805 /usr/lib/lmms/ladspa/tap_sigmoid.so
7fe772d84000-7fe772d88000 r-xp 00000000 08:01 11802 /usr/lib/lmms/ladspa/tap_rotspeak.so
7fe772d88000-7fe772f88000 ---p 00004000 08:01 11802 /usr/lib/lmms/ladspa/tap_rotspeak.so
7fe772f88000-7fe772f89000 r--p 00004000 08:01 11802 /usr/lib/lmms/ladspa/tap_rotspeak.so
7fe772f89000-7fe772f8a000 rw-p 00005000 08:01 11802 /usr/lib/lmms/ladspa/tap_rotspeak.so
7fe772f8a000-7fe772f8b000 rw-p 00000000 00:00 0
7fe772f8b000-7fe772f8f000 r-xp 00000000 08:01 11827 /usr/lib/lmms/ladspa/tap_reverb.so
7fe772f8f000-7fe77318e000 ---p 00004000 08:01 11827 /usr/lib/lmms/ladspa/tap_reverb.so
7fe77318e000-7fe77318f000 r--p 00003000 08:01 11827 /usr/lib/lmms/ladspa/tap_reverb.so
7fe77318f000-7fe773194000 rw-p 00004000 08:01 11827 /usr/lib/lmms/ladspa/tap_reverb.so
7fe773194000-7fe773196000 r-xp 00000000 08:01 11815 /usr/lib/lmms/ladspa/tap_reflector.so
7fe773196000-7fe773396000 ---p 00002000 08:01 11815 /usr/lib/lmms/ladspa/tap_reflector.so
7fe773396000-7fe773397000 r--p 00002000 08:01 11815 /usr/lib/lmms/ladspa/tap_reflector.so
7fe773397000-7fe773398000 rw-p 00003000 08:01 11815 /usr/lib/lmms/ladspa/tap_reflector.so
7fe773398000-7fe773399000 rw-p 00000000 00:00 0
7fe773399000-7fe77339c000 r-xp 00000000 08:01 11809 /usr/lib/lmms/ladspa/tap_pitch.so
7fe77339c000-7fe77359b000 ---p 00003000 08:01 11809 /usr/lib/lmms/ladspa/tap_pitch.so
7fe77359b000-7fe77359c000 r--p 00002000 08:01 11809 /usr/lib/lmms/ladspa/tap_pitch.so
7fe77359c000-7fe77359d000 rw-p 00003000 08:01 11809 /usr/lib/lmms/ladspa/tap_pitch.so
7fe77359d000-7fe77359e000 rw-p 00000000 00:00 0
7fe77359e000-7fe7735a0000 r-xp 00000000 08:01 11821 /usr/lib/lmms/ladspa/tap_pinknoise.so
7fe7735a0000-7fe77379f000 ---p 00002000 08:01 11821 /usr/lib/lmms/ladspa/tap_pinknoise.so
7fe77379f000-7fe7737a0000 r--p 00001000 08:01 11821 /usr/lib/lmms/ladspa/tap_pinknoise.so
7fe7737a0000-7fe7737a1000 rw-p 00002000 08:01 11821 /usr/lib/lmms/ladspa/tap_pinknoise.so
7fe7737a1000-7fe7737a3000 r-xp 00000000 08:01 11826 /usr/lib/lmms/ladspa/tap_limiter.so
7fe7737a3000-7fe7739a2000 ---p 00002000 08:01 11826 /usr/lib/lmms/ladspa/tap_limiter.so
7fe7739a2000-7fe7739a3000 r--p 00001000 08:01 11826 /usr/lib/lmms/ladspa/tap_limiter.so
7fe7739a3000-7fe7739a4000 rw-p 00002000 08:01 11826 /usr/lib/lmms/ladspa/tap_limiter.so
Aborted (coredump)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lmms 0.4.10-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
Date: Sun Jul 8 13:20:30 2012
InstallationMedia: Ubuntu-Studio 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
ProcEnviron:
LANGUAGE=ja:en
TERM=xterm
PATH=(custom, no user)
LANG=ja_JP.UTF-8
SHELL=/bin/bash
SourcePackage: lmms
UpgradeStatus: Upgraded to precise on 2012-03-31 (99 days ago)
this is a bug in caps.so not lmms