Rated 3 out of 5 stars

Hi, I just installed Cheevos this day and it seemed to have went fine after I got 45 points for Many Concurent Tabs and after that I got a cheevo for more tabs, BUT there was a problem because Firefox crashed suddenly.
I had two windows up at the time and it looked like it just kept crashing right after getting Pretty Tabs cheevo over and over again.
I would rearrange the tabs so they are all in one window for the addon, if that is all it takes to fix it.

Update: Now I'm not so sure it was it. It still crashed from something but it kind of stopped.

This review is for a previous version of the add-on (1.2.1-signed.1-signed).