"NoScript", for fast, fast relief
BTW, what the h*** is "Foxfire"?
Also, some worthless trivia. Did you know that "firefox" is one colloquial name for the "red panda", which is not a panda at all, but believed to be related to the racoon.
This is strange... I never heard of pop-ups from Firefox, and I've been using it for years.
It would be annoying...
Do you have "Block pop-up windows" checked under 'content' in the 'options' menu?
If so, what are the exceptions?