What distribution (dapper, edgy), what firefox and java-package-version on which site? In general I didn't encounter problems with this combination, neither on dapper nor on edgy.
** Changed in: Ubuntu Status: Unconfirmed => Needs Info -- Sun Java 5 crashed in Firefox https://launchpad.net/bugs/62307 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs