so our family computer has been acting kinda strange...its sorta sluggish and even when im not web browsing these pop ups come up on my screen, also, things have appeared on my desktop that i havent put there whats goin on!?
Install Avast! on your computer. Its free as long as you are a residential user (single license)
I haven't had any problems since I nstalled it. It updates automatically. It doesn't come with annoying popup advertisement...It is actually a good free product.