I get the same thing exactly, I have tried the suggest fix's of the X composite setting and I run 24bit anyway without luck :(
** Attachment added: "crash report" http://librarian.launchpad.net/5594629/firefox_crash_allan_l.zip -- AMD64 crash loading flash https://launchpad.net/bugs/74343 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs