Just recently, my computer was infected with a virus and/or spyware. I ran spybot search and destroy, symantec antivirus, malwarebytes, and Superantispyware. After doing scans with all 4 of those programs, it looks like the infection is finally gone. The reason why I say this is that my computer does not freeze up anymore. However, I still keep getting pop-up ads when I use Mozilla Firefox. How do I get rid of them? I never had pop-up ads before. Is it possible that the spyware infection lowered the security settings for Mozilla?