Hello. I use it for work too and am getting this issue. Here is a backtrace if they are still required. Any idea when a fix will hit the repos?

Thread 11 (Thread 0x43c6c950 (LWP 19841)):
#0  0x00007f6d74a62b04 in __lll_lock_wait () from /lib/libpthread.so.0
#1  0x00007f6d74a5e1a0 in _L_lock_102 () from /lib/libpthread.so.0
#2  0x00007f6d74a5daae in pthread_mutex_lock () from /lib/libpthread.so.0
#3  0x00007f6d627f3e26 in stub_send_internal (stub=0x1cdc9e0, ex=0x20ed140, oneway=0, command=CAMEL_STUB_CMD_GET_FOLDER_INFO, ap=0x43c6be10) at camel-stub.c:340
#4  0x00007f6d627f4007 in camel_stub_send (stub=0x1f899c0, ex=0x80, command=4294967295) at camel-stub.c:608
#5  0x00007f6d627f05c7 in exchange_get_folder_info (store=<value optimized out>, top=0x0, flags=1, ex=0x20ed140) at camel-exchange-store.c:748
#6  0x00007f6d77927227 in camel_store_get_folder_info (store=0x1a63de0, top=0x0, flags=7, ex=0x20ed140) at camel-store.c:894
#7  0x00007f6d67be8388 in get_folderinfo_exec (m=0x20ed120) at mail-ops.c:1069
#8  0x00007f6d67be552a in mail_msg_proxy (msg=0x20ed120) at mail-mt.c:520
#9  0x00007f6d6d9997f7 in ?? () from /usr/lib/libglib-2.0.so.0
#10 0x00007f6d6d998264 in ?? () from /usr/lib/libglib-2.0.so.0
#11 0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#12 0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#13 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x4346b950 (LWP 19840)):
#0  0x00007f6d74a6055d in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6d716de605 in ?? () from /usr/lib/libgthread-2.0.so.0
#2  0x00007f6d6d94b76b in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6d6d999829 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007f6d6d998264 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#6  0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x42c6a950 (LWP 19837)):
#0  camel_folder_summary_load_from_db (s=0x2363940, ex=0x42c69dc0) at camel-folder-summary.c:954
#1  0x00007f6d627f1af3 in camel_exchange_summary_new (folder=0x0, 
    filename=0x7f6d5c00fee0 "/home/darrenm/.evolution/mail/exchange/dmansell@EXCHANGE/personal/subfolders/Inbox/summary") at camel-exchange-summary.c:145
#2  0x00007f6d627eb65f in camel_exchange_folder_construct (folder=0x0, parent=<value optimized out>, name=0x21cbbc1 "personal/Inbox", camel_flags=0, 
    folder_dir=0x7f6d5c00fb30 "/home/darrenm/.evolution/mail/exchange/dmansell@EXCHANGE/personal/subfolders/Inbox", offline_state=0, stub=0x1cdc9e0, ex=0x21c9b20)
    at camel-exchange-folder.c:1015
#3  0x00007f6d627f08b9 in exchange_get_folder (store=0x1a63de0, folder_name=0x21cbbc1 "personal/Inbox", flags=0, ex=0x21c9b20) at camel-exchange-store.c:516
#4  0x00007f6d779275d0 in camel_store_get_folder (store=0x1a63de0, folder_name=0x21cbbc1 "personal/Inbox", flags=0, ex=0x21c9b20) at camel-store.c:345
#5  0x00007f6d67bee8e7 in mail_tool_uri_to_folder (uri=<value optimized out>, flags=0, ex=0x21c9b20) at mail-tools.c:331
#6  0x00007f6d67be74f4 in get_folder_exec (m=0x21c9b00) at mail-ops.c:1214
#7  0x00007f6d67be552a in mail_msg_proxy (msg=0x21c9b00) at mail-mt.c:520
#8  0x00007f6d6d9997f7 in ?? () from /usr/lib/libglib-2.0.so.0
#9  0x00007f6d6d998264 in ?? () from /usr/lib/libglib-2.0.so.0
#10 0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#11 0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x42469950 (LWP 19834)):
#0  0x00007f6d6d6a2482 in select () from /lib/libc.so.6
#1  0x00007f6d766172bb in camel_read (fd=42, buf=0x240f910 "\a", n=4) at camel-file-utils.c:466
#2  0x00007f6d627f2c9d in do_read (marshal=0x1f99650, buf=0x240f910 "\a", len=4) at camel-stub-marshal.c:107
#3  0x00007f6d627f2dd4 in marshal_read (marshal=0x1f99650, buf=0x42468d47 "", len=1) at camel-stub-marshal.c:134
#4  0x00007f6d627f2e90 in decode_uint32 (marshal=0x1f99650, dest=0x42468dd4) at camel-stub-marshal.c:169
#5  0x00007f6d627f2f89 in camel_stub_marshal_decode_uint32 (marshal=0x33, dest=0x42468c00) at camel-stub-marshal.c:282
#6  0x00007f6d627f3864 in stub_send_internal (stub=0x1cdc9e0, ex=0x21c5a10, oneway=0, command=<value optimized out>, ap=0x42468e10) at camel-stub.c:423
#7  0x00007f6d627f4007 in camel_stub_send (stub=0x33, ex=0x42468c00, command=4294967295) at camel-stub.c:608
#8  0x00007f6d627f05c7 in exchange_get_folder_info (store=<value optimized out>, top=0x0, flags=1, ex=0x21c5a10) at camel-exchange-store.c:748
#9  0x00007f6d77927227 in camel_store_get_folder_info (store=0x1a63de0, top=0x0, flags=7, ex=0x21c5a10) at camel-store.c:894
#10 0x00007f6d67baf98b in emft_get_folder_info__exec (m=0x21c59f0) at em-folder-tree.c:1728
#11 0x00007f6d67be552a in mail_msg_proxy (msg=0x21c59f0) at mail-mt.c:520
#12 0x00007f6d6d9997f7 in ?? () from /usr/lib/libglib-2.0.so.0
#13 0x00007f6d6d998264 in ?? () from /usr/lib/libglib-2.0.so.0
#14 0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#15 0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#16 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x40a1b950 (LWP 19832)):
#0  0x00007f6d6d6a2482 in select () from /lib/libc.so.6
#1  0x00007f6d766172bb in camel_read (fd=43, buf=0x1d0a0a0 "p\n\223mm\177", n=4) at camel-file-utils.c:466
#2  0x00007f6d627f2c9d in do_read (marshal=0x1f99680, buf=0x1d0a0a0 "p\n\223mm\177", len=4) at camel-stub-marshal.c:107
#3  0x00007f6d627f2dd4 in marshal_read (marshal=0x1f99680, buf=0x40a1b017 "", len=1) at camel-stub-marshal.c:134
#4  0x00007f6d627f2e90 in decode_uint32 (marshal=0x1f99680, dest=0x40a1b05c) at camel-stub-marshal.c:169
#5  0x00007f6d627f2f89 in camel_stub_marshal_decode_uint32 (marshal=0x2e, dest=0x40a1aed0) at camel-stub-marshal.c:282
#6  0x00007f6d627f41e3 in status_main (data=<value optimized out>) at camel-stub.c:134
#7  0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#8  0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x41c34950 (LWP 19829)):
#0  0x00007f6d74a62c35 in __lll_unlock_wake () from /lib/libpthread.so.0
#1  0x00007f6d74a5f589 in _L_unlock_56 () from /lib/libpthread.so.0
#2  0x00007f6d74a5f1e6 in __pthread_mutex_unlock_usercnt () from /lib/libpthread.so.0
#3  0x00007f6d779201ed in camel_service_connect (service=0x1a63de0, ex=0x7f6d74a5f570) at camel-service.c:382
#4  0x00007f6d627ef2fb in camel_exchange_store_connected (store=0x1a63de0, ex=0x20de540) at camel-exchange-store.c:188
#5  0x00007f6d627f04aa in exchange_get_folder_info (store=<value optimized out>, top=0x0, flags=7, ex=0x20de540) at camel-exchange-store.c:736
#6  0x00007f6d77927227 in camel_store_get_folder_info (store=0x1a63de0, top=0x0, flags=7, ex=0x20de540) at camel-store.c:894
#7  0x00007f6d67be8388 in get_folderinfo_exec (m=0x20de520) at mail-ops.c:1069
#8  0x00007f6d67be552a in mail_msg_proxy (msg=0x20de520) at mail-mt.c:520
#9  0x00007f6d6d9997f7 in ?? () from /usr/lib/libglib-2.0.so.0
#10 0x00007f6d6d998264 in ?? () from /usr/lib/libglib-2.0.so.0
#11 0x00007f6d74a5c3ea in start_thread () from /lib/libpthread.so.0
#12 0x00007f6d6d6a9c6d in clone () from /lib/libc.so.6
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6d7ad5e790 (LWP 19816)):
#0  0x00007f6d73aa3847 in html_engine_get_doc_height () from /usr/lib/libgtkhtml-3.14.so.19
#1  0x00007f6d73a6e184 in gtk_html_private_calc_scrollbars () from /usr/lib/libgtkhtml-3.14.so.19
#2  0x00007f6d73aa3bb0 in ?? () from /usr/lib/libgtkhtml-3.14.so.19
#3  0x00007f6d73aab8ec in ?? () from /usr/lib/libgtkhtml-3.14.so.19
#4  0x00007f6d73aac138 in ?? () from /usr/lib/libgtkhtml-3.14.so.19
#5  0x00007f6d73a6cf78 in gtk_html_stream_close () from /usr/lib/libgtkhtml-3.14.so.19
#6  0x00007f6d67bbf5e7 in efh_format_timeout (m=0x23296e0) at em-format-html.c:1402
#7  0x00007f6d67ba5bb2 in emfb_search_config_search (efb=<value optimized out>, rule=<value optimized out>, id=<value optimized out>, query=0x240f650 "", 
    data=<value optimized out>) at em-folder-browser.c:866
#8  0x00007f6d66e99451 in option_changed (esb=0x1cdad80, data=<value optimized out>) at e-filter-bar.c:351
#9  0x00007f6d6de0b25d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#10 0x00007f6d6de20f5d in ?? () from /usr/lib/libgobject-2.0.so.0
#11 0x00007f6d6de22608 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#12 0x00007f6d6de22b33 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#13 0x00007f6d7a551300 in emit_search_activated (esb=0x1cdad80) at e-search-bar.c:171
#14 0x00007f6d7a551666 in idle_activate_hack (ptr=0x1cdad80) at e-search-bar.c:950
#15 0x00007f6d6d96ed3b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0x00007f6d6d97250d in ?? () from /usr/lib/libglib-2.0.so.0
#17 0x00007f6d6d972a3d in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#18 0x00007f6d721ec8a6 in bonobo_main () from /usr/lib/libbonobo-2.so.0
#19 0x00000000004155df in main (argc=<value optimized out>, argv=0x7fff82db61f8) at main.c:690
954	in camel-folder-summary.c