Rated 5 out of 5 stars

Like most users, I have also been facing similar problems like:

a. Even after closing firefox, it does not quit. Appears to be some problem with this addon (disabled it and no problems).

b. It's an indispensable addon would be great if you could fix the problems.

This review is for a previous version of the add-on (2.1.5.4).  This user has other reviews of this add-on.