I just happened upon this area and wondered if this is the type of thing you're looking into too? http://ubuntuforums.org/showthread.php?t=370432&page=2 Additional programs causing lockup are Xchat, ePDFview, pan, VLC. When opening maximized it appears. Mouse pointer moves but buttons, as with keyboard keys, are dead.
Unresolved to go here?
Archived thread 395087 from Unanswered Posts Team. Markdown source: Unanswered_Posts_Team/thread_395087_Unresolved_to_go_here.md