Rated 4 out of 5 stars
Edit 07-29-2012: As before, I still like it & used it for yrs. Problem of Ask For Sanitize window not closing seems to have "disappeared" after upgrading to Fx 14 - so far. Impossible to say (now) whether was a change in another extension or new Fx version that helped. Had very few extension upgrades between Fx 13.0.1 & 14, so my * guess * is some Fx 14 change helped it start working correctly again. I used same profile for Fx 14 as in Fx 13.
Didn't have time to test AFS w/ all other addons disabled (or in clean profile) before Fx 14. Still don't know why Mozilla decided to stop having the Clear Data window appear.
End of Edit.
Same here. A few weeks ago (possibly w/ Fx 13??) started having to click OK to "sanitize" at Fx shutdown several times to get it & Fx to close. Thought v2.1 update might fix - but didn't.
Uninstalled AFS, d/l fresh copy of 2.1 & reinstalled - same issue. Sometimes clicking OK many times won't close AFS UI - must Esc. Sometimes after hitting Esc or click outside AFS UI, Fx closes, but AFS UI persists.
Besides that, have used it several yrs & been very happy