I think this is a symptom of the sound-related problems that flash has (which cause browser hangs) or . Bug 14911 is about the visual problems (which cause browser crashs) flash has
** This bug is no longer a duplicate of bug 14911 Flash plugin problem with ARGB visuals causes crash -- Mozilla Firefox hangs when loading most macromedia flash files https://launchpad.net/bugs/25681 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
