This still appears in Edgy. In bug 59210, which seems to be a duplicate of this bug, it is stated that this has been fixed in Java 1.6: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6376296 (currently, the Sun bugtracker sadly times out)
** Summary changed: - java applet - firefox 1.5.0.1 crash, 100% cpu usage + Java applet makes Firefox crash, 100% cpu usage -- Java applet makes Firefox crash, 100% cpu usage https://launchpad.net/bugs/31631 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
