I've just switched from a Gnome 3 login session to a Unity 3D session and got the same error.
This is with Oneiric and all updates applied. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-panel in Ubuntu. https://bugs.launchpad.net/bugs/811689 Title: gnome-panel crashed with SIGSEGV in g_closure_invoke() Status in “gnome-panel” package in Ubuntu: Confirmed Bug description: Updated from 11.04 to 11.10 then switched to xubuntu-desktop, logged in to xubuntu-session and was greeted with this. ProblemType: Crash DistroRelease: Ubuntu 11.10 Package: gnome-panel 1:3.0.2-0ubuntu6 Uname: Linux 3.0.0-0300rc7-generic x86_64 NonfreeKernelModules: nvidia wl Architecture: amd64 Date: Sun Jul 17 00:34:32 2011 ExecutablePath: /usr/bin/gnome-panel InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) ProcCmdline: gnome-panel ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/zsh SegvAnalysis: Segfault happened at: 0x7f9c261008e5: mov 0x70(%rax),%edx PC (0x7f9c261008e5) ok source "0x70(%rax)" (0xaaaaaaaaaaaaab1a) not located in a known VMA region (needed readable region)! destination "%edx" ok SegvReason: reading unknown VMA Signal: 11 SourcePackage: gnome-panel StacktraceTop: ?? () from /usr/lib/libgtk-3.so.0 ?? () from /usr/lib/libgtk-3.so.0 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 Title: gnome-panel crashed with SIGSEGV in g_closure_invoke() UpgradeStatus: Upgraded to oneiric on 2011-07-16 (0 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/811689/+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