I'm pretty certain this happened when one of the files that was open in gedit, got deleted from disk.
** Attachment added: "stack trace" https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1180665/+attachment/3739539/+files/gedit-crash.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gedit in Ubuntu. https://bugs.launchpad.net/bugs/1180665 Title: gedit crashed with SIGSEGV in gedit_multi_notebook_get_active_tab() Status in “gedit” package in Ubuntu: Confirmed Bug description: crashed with about 5 tabs open ProblemType: Crash DistroRelease: Ubuntu 13.10 Package: gedit 3.8.0-0ubuntu1~raring1 [origin: LP-PPA-gnome3-team-gnome3] ProcVersionSignature: Ubuntu 3.9.0-1.5-generic 3.9.1 Uname: Linux 3.9.0-1-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.10.1-0ubuntu1 Architecture: amd64 Date: Thu May 16 12:26:21 2013 ExecutablePath: /usr/bin/gedit ExecutableTimestamp: 1367295250 InstallationDate: Installed on 2012-09-23 (235 days ago) InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Alpha amd64(20120922) MarkForUpload: True ProcCmdline: gedit ProcCwd: /home/darkness ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0x460076 <gedit_multi_notebook_get_active_tab+22>: cmp %rax,(%rdx) PC (0x00460076) ok source "%rax" ok destination "(%rdx)" (0xaaaaaaaaaaaaaaaa) not located in a known VMA region (needed writable region)! SegvReason: writing unknown VMA Signal: 11 SourcePackage: gedit StacktraceTop: gedit_multi_notebook_get_active_tab () ?? () selection_received (widget=0x1e09dd0, selection_data=0x7fffd9d55a70, time=<optimised out>) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkclipboard.c:939 g_closure_invoke (closure=0x1fbe0e0, return_value=0x0, n_param_values=3, param_values=0x7fffd9d55720, invocation_hint=0x7fffd9d556c0) at /build/buildd/glib2.0-2.37.0/./gobject/gclosure.c:777 signal_emit_unlocked_R (node=node@entry=0x19c8db0, detail=detail@entry=0, instance=instance@entry=0x1e09dd0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffd9d55720) at /build/buildd/glib2.0-2.37.0/./gobject/gsignal.c:3584 Title: gedit crashed with SIGSEGV in gedit_multi_notebook_get_active_tab() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1180665/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp