One other thing to try if you haven't already is shutting off Compiz. In the lucid timeframe I recall there were some freeze bugs with compiz enabled which went away with it turned off. (I can't tell from this bug report whether compiz was on or off in this case.)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/599017 Title: [gm45] Xorg freeze on Firefox on one particular page -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
