Hello marshyrob and thanks for contacting us, Unfortunately we don't usually give support to extensions, because they are developed by other users, and any problems derived to them should theoretically be managed by developer itself. If you have problems with the extension please uninstall it or [http://foxclocks.org/contact contact its developer]. The most probable source of the problem is a Firefox update. Many times extensions don't manage well updates and just don't work or hang. In this case you should contact anyway Foxclocks developer so he can launch a new update or mark the extension as not compatible with Firefox 14.0.1. Thanks for your help.