cant play dvds

[Death]

I can go to the scene selection but when I choose a scene nothing plays and I cant play the movie, I also cant play that it depends on the movie

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: libgstreamer0.10-0 0.10.35-1
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Sat Feb 18 08:41:05 2012
ExecutablePath: /usr/bin/totem
InstallationMedia: Ubuntu 11.10 "Oneiric" - Build i386 LIVE Binary 20111015-16:02
ProcEnviron:
 PATH=(custom, no user)
 LANG=ja_JP.UTF-8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10
UpgradeStatus: No upgrade log present (probably fresh install)