I just uninstalled the xserver-xgl package and then everything worked just fine. According to the post above this is not a bug, just a performance issue... But for the intel cards that xserver-xgl isn't working for it should be disabled by default...
Had the same problem with my intel 915. Found the soulution here:
http:// ubuntuforums. org/showpost. php?p=3416144& postcount= 15
I just uninstalled the xserver-xgl package and then everything worked just fine. According to the post above this is not a bug, just a performance issue... But for the intel cards that xserver-xgl isn't working for it should be disabled by default...