Will promptly close without any error and won't play any video again

[Mani Sabri]

It happens after I watch more than a couple of videos with it (it will open but instantly closes when the movie is about to be played) the solution is to log out and login again. after this happens VLC wont work properly either and shows a black screen in place of the video but sound works in VLC. if I change the video output method to something other than GLX video output (in VLC) it will work. I'm using ATI proprietary driver .

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: libgstreamer0.10-0 0.10.32-3ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Fri Jul 8 07:54:25 2011
ExecutablePath: /usr/bin/totem
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10
UpgradeStatus: No upgrade log present (probably fresh install)