My bad Rated 5 out of 5 stars
To add a toolbar button just go to customize and find a restart button, drag and drop it to where you want and hey presto :) Love this add-on even more now! 5 stars :)
Rated 4 out of 5 stars
Works fine with FF 6. Just wish I could find the toolbar button as I don't like to keep going to file and then clicking restart. Apart from that this add-on is all good. Thank you.