Thank you for reporting this to Ubuntu. This appears to be upstream bug https://bugzilla.mozilla.org/show_bug.cgi?id=596883. Would you happen to have a URL that doesn't require a login that triggers this behavior so that I can confirm it in Firefox 4?
** Bug watch added: Mozilla Bugzilla #596883 https://bugzilla.mozilla.org/show_bug.cgi?id=596883 ** Changed in: firefox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/738437 Title: firefox "Warning: Unresponsive script" dialog fails to wrap text in URL path -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs