The bug hasn't seen any activity in years and there has been no recent similar reports, the code also changed quite a lot since and it's likely the issue doesn't exist anymore. Closing, feel free to open a new report if you still get problems in recent Ubuntu versions
** Changed in: gnome-control-center (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/974867 Title: gnome-control-center crashed with SIGSEGV in gtk_widget_size_allocate() Status in gnome-control-center package in Ubuntu: Invalid Bug description: actieons 1/ install load Nvidia recommended driver make dual screen with Nvidia Cenerama Update Reboot with system => displays try to set de launcher on one screen ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: gnome-control-center 1:3.4.0-0ubuntu4 ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14 Uname: Linux 3.2.0-22-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0-0ubuntu4 Architecture: amd64 CrashCounter: 1 Date: Fri Apr 6 07:58:46 2012 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328) ProcCmdline: gnome-control-center --overview SegvReason: reading NULL VMA Signal: 11 SourcePackage: gnome-control-center Title: gnome-control-center crashed with SIGSEGV in gtk_widget_size_allocate() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/974867/+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