Having upgraded from Dapper to Edgy, I also see this. It requires Composite and 16-bit visuals. The priority of this bug must be raised; now Composite is on by default, a lot more people are going to see this.
The relevant Firefox bug is: http://bugzilla.mozilla.org/show_bug.cgi?id=304370 -- Flash plugin problem with ARGB visuals causes crash https://launchpad.net/bugs/14911 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
