Slow, lagging. When using internet, ads popping up EVERYWHERE!
My MacBook is running slow, lagging really bad when searching the internet, opening big applications, etc. There are so many annoying ads EVERYWHERE, no matter which internet app I use. The memory isn't close to full and I don't have unnecessary or large files. I ran the app ClamXav checking for possible viruses, it showed nothing. I read that Trojans and viruses are different. Any recommended programs I can download? I would even consider spending a little money to solve this problem, if need be. Any info, much appreciated!
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