I am suddenly getting hangs on FireFox and a window comes up saying that a greasemonkey script (chrome://greasemonkey/content/preferencemanager/js.55) is not running properly and my computer may run slowly. FF completely hangs and I cannot abort or continue the script, there is no response. I have to do a hard reset.
I checked Tools>GreaseMonkey scripts and do not have any installed. Does anyone know what is happening and how I can fix this?