I've added it because I just got the very same thing on a fully updated 9.10 searched, saw the question, found the upstream bug and thought it might be useful for others.
-- Script file:///usr/lib/firefox-3.6.8/components/nsExtensionManager.js:623 may be busy, or it may have stopped responding https://bugs.launchpad.net/bugs/630625 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
