Will asked me to run from command line to see if any useful messages appear. Output was as below, but I'm pretty sure none of that was generated by the crash - I think it all happened in normal operation.
jane@jane-xps:~$ thunderbird (process:14996): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed enigmail.js: Registered components mimeVerify.jsm: module initialized 1424340205997 addons.update-checker WARN Update manifest for {972ce4c6-7e08-4474-a285-3208198ce6fd} did not contain an updates property 1424340206325 addons.update-checker WARN Update manifest for langpack-en...@thunderbird.mozilla.org did not contain an updates property 1424340206337 addons.update-checker WARN Update manifest for messagingm...@mozilla.com did not contain an updates property mimeEncrypt.js: module initialized (process:15309): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed (thunderbird:14996): Gtk-CRITICAL **: IA__gtk_clipboard_set_with_data: assertion 'targets != NULL' failed (process:16499): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1420811 Title: frequent Thunderbird crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1420811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs