It seems to affect FF 9 - 13. According to Wladimir ther will be a fix tomorrow (it is already in the dev build).
It's 11/23 now, but I'm still having these problems (using FF 12). I've tried all the fixes above and nothing works. What's the point of having ad-blocking software if it doesn't remember my filters? And why should we trust ad-blocking software that cripples its own filters when it updates?
Does anyone know when will this be fixed?