Got an infection the other day, not sure what it was, couldnt find any info on it on the internet. But the name was "Scanner" and about every 2 seconds something would pop up telling me i had problems with my hard drive and that i needed to do a defrag. I eventually got it to stop opening on start up, and i think ive got most of it off my system but now i have serious memory problems. If i have itunes open and a game, i have about 80% physical memory, but before this, i could run a game, itunes and about 14 tabs on the internet just FINE. I have no idea what to do. I cant play or do much of anything on my PC without alot of chop and my computer telling me to close something because its taking up too much memory. Please help!