Internet explorer, which I'm assuming you're using is horrible. It's not very secure and using it in the past I've had nothing but problems with it crashing and popup ads and it was a real pain. Once you go Firefox you never go back, trust me!
Yeah I've been using Firefox for several years but never realized that there was a add on pop up blocker til now. The only time I ever use IE is for windows update and to watch streaming Netflix movies.
