Rated 5 out of 5 stars
This is a great addon! I have had no issues (well, one...but it doesn't really count...yet). On my older X2 @2.5Ghz dual processor pc Fox Tab pops up practically instantly when called and runs seamlessly, which is something I can't say about a lot of addons out there (believe me, I use tons of them).
The only thing is that the open "top sites" in new tab option seems to conflict in so way with the Tab Mix Plus addon. I still give 5 stars because that option is labeled beta, so this is understandable. It's weird. When I open the blank tab it's just that - a blank tab (which is what Tab Mix Plus is set to show. But when I click on another tab and then go back to the blank one Fox Tab's "top sites" is shown. With Tab Mix Plus disabled it works perfectly. Unfortunately, Tab Mix doesn't seem to have an option to no interfere with the opening of a new tab. However, New Tab King works with Tab Mix Plus, so the functionality is apparently possible, although I wouldn't know for sure:)
Anyway, great job, I use this constantly and would recommend it over other similar addons any day. Thanks!