compiz crashed with SIGABRT in __kernel_vsyscall() - when i put a video in fullscreen mode - until 3 second crash

[HACK3R]

When i put a video in full screen mode - after 3 seconds - Ubuntu crashes

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.36-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
Date: Fri Apr 1 12:49:20 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=ro_RO:en
 LANG=ro_RO.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: nux
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 g_assertion_message () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGABRT in __kernel_vsyscall()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #743598, 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.