THIS IS THE OUTPUT AT SHUTDOWN, WITHOUT HAVING FROZEN: scott@scott-desktop:~$ thunderbird ** (gecko:12884): WARNING **: No listener with the specified listener id 1 ** (gecko:12884): WARNING **: No listener with the specified listener id 2 ** (gecko:12884): WARNING **: No listener with the specified listener id 3 ** (gecko:12884): WARNING **: No listener with the specified listener id 4 ** (gecko:12884): WARNING **: No listener with the specified listener id 5 ** (gecko:12884): WARNING **: No listener with the specified listener id 6 ** (gecko:12884): WARNING **: No listener with the specified listener id 7 ** (gecko:12884): WARNING **: No listener with the specified listener id 8 ** (gecko:12884): WARNING **: No listener with the specified listener id 9 ** (gecko:12884): WARNING **: No listener with the specified listener id 10 ** (gecko:12884): WARNING **: No listener with the specified listener id 11 ** (gecko:12884): WARNING **: No listener with the specified listener id 12 ** (gecko:12884): WARNING **: No listener with the specified listener id 13 ** (gecko:12884): WARNING **: No listener with the specified listener id 14 ** (gecko:12884): WARNING **: No listener with the specified listener id 15 ** (gecko:12884): WARNING **: No listener with the specified listener id 16 ** (gecko:12884): WARNING **: No listener with the specified listener id 17 ** (gecko:12884): WARNING **: No listener with the specified listener id 18 ** (gecko:12884): WARNING **: No listener with the specified listener id 19 ** (gecko:12884): WARNING **: No listener with the specified listener id 20 ** (gecko:12884): WARNING **: No listener with the specified listener id 21 ** (gecko:12884): WARNING **: No listener with the specified listener id 22 ** (gecko:12884): WARNING **: No listener with the specified listener id 23 ** (gecko:12884): WARNING **: No listener with the specified listener id 24 ** (gecko:12884): WARNING **: No listener with the specified listener id 25 ** (gecko:12884): WARNING **: No listener with the specified listener id 26 ** (gecko:12884): WARNING **: No listener with the specified listener id 27 ** (gecko:12884): WARNING **: No listener with the specified listener id 28 (gecko:12884): GLib-CRITICAL **: g_hash_table_foreach_remove: assertion `hash_table != NULL' failed AND THIS IS THE OUTPUT WHEN THUNDERBIRD FREEZES (AND IS KILLED): scott@scott-desktop:~$ thunderbird *** glibc detected *** /usr/lib/thunderbird/thunderbird-bin: free(): invalid next size (fast): 0x000000000393e1b0 *** ======= Backtrace: ========= /lib/libc.so.6[0x7f62b1cc9938] /lib/libc.so.6(cfree+0x76)[0x7f62b1ccbf86] /usr/lib/thunderbird/components/libwidget_gtk2.so[0x7f62a3b6dbc9] /usr/lib/thunderbird/components/libwidget_gtk2.so[0x7f62a3b7a52e] /usr/lib/thunderbird/components/libnsappshell.so[0x7f62a28212ec] /usr/lib/thunderbird/components/libnsappshell.so[0x7f62a2825b33] /usr/lib/thunderbird/components/libgklayout.so[0x7f62a1212a65] /usr/lib/thunderbird/libxpcom_core.so(PL_HandleEvent+0x19)[0x7f62b5d72be9] /usr/lib/thunderbird/libxpcom_core.so(PL_ProcessPendingEvents+0x55)[0x7f62b5d72ed5] /usr/lib/thunderbird/libxpcom_core.so[0x7f62b5d7486b] /usr/lib/thunderbird/components/libwidget_gtk2.so[0x7f62a3b6f5b2] /usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x23b)[0x7f62b2cb2d3b] /usr/lib/libglib-2.0.so.0[0x7f62b2cb650d] /usr/lib/libglib-2.0.so.0(g_main_loop_run+0x1cd)[0x7f62b2cb6a3d] /usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xa7)[0x7f62b4dd47a7] /usr/lib/thunderbird/components/libwidget_gtk2.so[0x7f62a3b6fb40] /usr/lib/thunderbird/components/libtoolkitcomps.so[0x7f62a32a90ee] /usr/lib/thunderbird/thunderbird-bin[0x408efc] /lib/libc.so.6(__libc_start_main+0xe6)[0x7f62b1c6e466] /usr/lib/thunderbird/thunderbird-bin[0x4039f9] ======= Memory map: ======== 00400000-00415000 r-xp 00000000 08:02 564802 /usr/lib/thunderbird/thunderbird-bin 00615000-00616000 r--p 00015000 08:02 564802 /usr/lib/thunderbird/thunderbird-bin 00616000-00617000 rw-p 00016000 08:02 564802 /usr/lib/thunderbird/thunderbird-bin 02359000-050ba000 rw-p 02359000 00:00 0 [heap] 40a94000-40a95000 ---p 40a94000 00:00 0 40a95000-41295000 rw-p 40a95000 00:00 0 41295000-41296000 ---p 41295000 00:00 0 41296000-41a96000 rw-p 41296000 00:00 0 41a96000-41a97000 ---p 41a96000 00:00 0 41a97000-42297000 rw-p 41a97000 00:00 0 42297000-42298000 ---p 42297000 00:00 0 42298000-42a98000 rw-p 42298000 00:00 0 42a98000-42a99000 ---p 42a98000 00:00 0 42a99000-43299000 rw-p 42a99000 00:00 0 43299000-4329a000 ---p 43299000 00:00 0 4329a000-43a9a000 rw-p 4329a000 00:00 0 43a9a000-43a9b000 ---p 43a9a000 00:00 0 43a9b000-4429b000 rw-p 43a9b000 00:00 0 4429b000-4429c000 ---p 4429b000 00:00 0 4429c000-44a9c000 rw-p 4429c000 00:00 0 4529d000-4529e000 ---p 4529d000 00:00 0 4529e000-45a9e000 rw-p 4529e000 00:00 0 45a9e000-45a9f000 ---p 45a9e000 00:00 0 45a9f000-4629f000 rw-p 45a9f000 00:00 0 4629f000-462a0000 ---p 4629f000 00:00 0 462a0000-46aa0000 rw-p 462a0000 00:00 0 46aa0000-46aa1000 ---p 46aa0000 00:00 0 46aa1000-472a1000 rw-p 46aa1000 00:00 0 472a1000-472a2000 ---p 472a1000 00:00 0 472a2000-47aa2000 rw-p 472a2000 00:00 0 7f629bcc7000-7f629bcea000 r--p 00000000 08:02 277629 /usr/share/fonts/truetype/msttcorefonts/Verdana.ttf 7f629bcea000-7f629bcec000 r-xp 00000000 08:02 367293 /lib/libnss_mdns4.so.2 7f629bcec000-7f629beec000 ---p 00002000 08:02 367293 /lib/libnss_mdns4.so.2 7f629beec000-7f629beed000 rw-p 00002000 08:02 367293 /lib/libnss_mdns4.so.2 7f629beed000-7f629bef1000 r-xp 00000000 08:02 368308 /lib/libattr.so.1.1.0 7f629bef1000-7f629c0f0000 ---p 00004000 08:02 368308 /lib/libattr.so.1.1.0 7f629c0f0000-7f629c0f2000 rw-p 00003000 08:02 368308 /lib/libattr.so.1.1.0 7f629c0f2000-7f629c0fa000 r-xp 00000000 08:02 556448 /usr/lib/libfam.so.0.0.0 7f629c0fa000-7f629c2f9000 ---p 00008000 08:02 556448 /usr/lib/libfam.so.0.0.0 7f629c2f9000-7f629c2fa000 rw-p 00007000 08:02 556448 /usr/lib/libfam.so.0.0.0 7f629c2fa000-7f629c301000 r-xp 00000000 08:02 367229 /lib/libacl.so.1.1.0 7f629c301000-7f629c500000 ---p 00007000 08:02 367229 /lib/libacl.so.1.1.0 7f629c500000-7f629c502000 rw-p 00006000 08:02 367229 /lib/libacl.so.1.1.0 7f629c502000-7f629c510000 r-xp 00000000 08:02 587873 /usr/lib/gnome-vfs-2.0/modules/libfile.so 7f629c510000-7f629c70f000 ---p 0000e000 08:02 587873 /usr/lib/gnome-vfs-2.0/modules/libfile.so 7f629c70f000-7f629c710000 r--p 0000d000 08:02 587873 /usr/lib/gnome-vfs-2.0/modules/libfile.so 7f629c710000-7f629c711000 rw-p 0000e000 08:02 587873 /usr/lib/gnome-vfs-2.0/modules/libfile.so 7f629c711000-7f629c772000 r-xp 00000000 08:02 34517 /usr/lib/thunderbird/components/libstoragecomps.so 7f629c772000-7f629c971000 ---p 00061000 08:02 34517 /usr/lib/thunderbird/components/libstoragecomps.so 7f629c971000-7f629c974000 r--p 00060000 08:02 34517 /usr/lib/thunderbird/components/libstoragecomps.so 7f629c974000-7f629c975000 rw-p 00063000 08:02 34517 /usr/lib/thunderbird/components/libstoragecomps.so 7f629c975000-7f629c9b9000 r--p 00000000 08:02 277613 /usr/share/fonts/truetype/msttcorefonts/Arial.ttf 7f629c9b9000-7f629c9ff000 r--p 00000000 08:02 277611 /usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf 7f629ca09000-7f629ca53000 r--p 00000000 08:02 277587 /usr/share/fonts/truetype/msttcorefonts/Courier_New.ttf 7f629ca53000-7f629ca9f000 r--p 00000000 08:02 73632 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono.ttf 7f629ca9f000-7f629cab7000 r--p 00000000 08:02 60524 /usr/share/locale-langpack/fr/LC_MESSAGES/gedit.mo 7f629cab7000-7f629cace000 r--s 00000000 08:02 42193 /usr/share/mime/mime.cache 7f629cace000-7f629caee000 r-xp 00000000 08:02 35860 /usr/lib/thunderbird/components/libwallet.so 7f629caee000-7f629cced000 ---p 00020000 08:02 35860 /usr/lib/thunderbird/components/libwallet.so 7f629cced000-7f629ccee000 r--p 0001f000 08:02 35860 /usr/lib/thunderbird/components/libwallet.so 7f629ccee000-7f629ccef000 rw-p 00020000 08:02 35860 /usr/lib/thunderbird/components/libwallet.so 7f629ccef000-7f629cdf3000 rw-p 7f629ccef000 00:00 0 7f629cdf3000-7f629ce7c000 r--p 00000000 08:02 73631 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf 7f629ce7c000-7f629cf80000 rw-p 7f629ce7c000 00:00 0 7f629cf80000-7f629d015000 r--p 00000000 08:02 73630 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf 7f629d015000-7f629d056000 rw-p 7f629d015000 00:00 0 7f629d056000-7f629d05a000 r-xp 00000000 08:02 367497 /lib/libnss_dns-2.8.90.so 7f629d05a000-7f629d25a000 ---p 00004000 08:02 367497 /lib/libnss_dns-2.8.90.so 7f629d25a000-7f629d25b000 r--p 00004000 08:02 367497 /lib/libnss_dns-2.8.90.so 7f629d25b000-7f629d25c000 rw-p 00005000 08:02 367497 /lib/libnss_dns-2.8.90.so 7f629d25c000-7f629d25e000 r-xp 00000000 08:02 367294 /lib/libnss_mdns4_minimal.so.2 7f629d25e000-7f629d45d000 ---p 00002000 08:02 367294 /lib/libnss_mdns4_minimal.so.2 7f629d45d000-7f629d45e000 rw-p 00001000 08:02 367294 /lib/libnss_mdns4_minimal.so.2 7f629d45e000-7f629d466000 r-xp 00000000 08:02 35857 /usr/lib/thunderbird/components/libmsgsmime.so 7f629d466000-7f629d665000 ---p 00008000 08:02 35857 /usr/lib/thunderbird/components/libmsgsmime.so 7f629d665000-7f629d666000 r--p 00007000 08:02 35857 /usr/lib/thunderbird/components/libmsgsmime.so 7f629d666000-7f629d667000 rw-p 00008000 08:02 35857 /usr/lib/thunderbird/components/libmsgsmime.so 7f629d667000-7f629d67d000 r-xp 00000000 08:02 35882 /usr/lib/thunderbird/components/libmailcomps.so 7f629d67d000-7f629d87d000 ---p 00016000 08:02 35882 /usr/lib/thunderbird/components/libmailcomps.so 7f629d87d000-7f629d87e000 r--p 00016000 08:02 35882 /usr/lib/thunderbird/components/libmailcomps.so 7f629d87e000-7f629d87f000 rw-p 00017000 08:02 35882 /usr/lib/thunderbird/components/libmailcomps.so 7f629d87f000-7f629d8d8000 r-xp 00000000 08:02 89927 /usr/lib/nss/libnssckbi.so 7f629d8d8000-7f629dad8000 ---p 00Killed