What I mean when I say popup windows are for example you go to UPS.com, you fill in your tracking number then you hit the display proof of delivery, a smaller window usually pops up showing that information, for me, I just get a huge blank gray screen. It also happens when I go to a support website for example and click on live chat, that window that should be popping up doesn't display. Tried reinstalling firefox and that didn't seem to fix it either. == This happened == Every time Firefox opened