had some issues Rated 3 out of 5 stars
In recent months I noticed that in some pages selecting text has become slow and with a delay and also FF crashes on restarts. I tried many different solutions but after disabling add-ons one by one I finally (and unfortunately) found out that it was related to this great add-on. May be this was only for me or maybe there was an incompatibility between this and my other add-ons (e.g. Quickjava?). Anyway if anyone else had those mentioned symptoms, my suggestion is to try disabling this add-on.