gnome-screensaver crashed with SIGABRT in raise()

[isatis39871]

I was watching an video using chromium and making an ubuntu update.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: gnome-screensaver 3.2.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu1
Architecture: amd64
CheckboxSubmission: ca8c458e7c2c738897eb71e441416e42
CheckboxSystem: 669b662da410063cc918e0f60cf6cddf
Date: Fri Mar 9 18:41:02 2012
ExecutablePath: /usr/bin/gnome-screensaver
GnomeSessionIdleInhibited: Yes
GnomeSessionInhibitors: 1: AppId = /usr/lib/chromium-browser/chromium-browser, Flags = 8, Reason = Power Save Blocker
GsettingsGnomeSession:
 org.gnome.desktop.session idle-delay uint32 600
 org.gnome.desktop.session session-name 'ubuntu'
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcCmdline: gnome-screensaver
Signal: 6
SourcePackage: gnome-screensaver
StacktraceTop:
 raise () from /lib/x86_64-linux-gnu/libc.so.6
 abort () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
Title: gnome-screensaver crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-03-06 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
WindowManager: No value set for `/desktop/gnome/session/required_components/windowmanager'

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #925138, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.