Well, 2 years with this computer and life was good, but it's going south now. I have a Dell using XP, and have AVG 6.0, with regular updates and regular scans. Last week I went to a website looking for lyrics. It tried to download a program which AVG found as a virus. Either way, it still got on there and after some work, I got rid of the files. It was a trojan horse downloader program which installed all kinds of crap on my PC. In all this process I also upgraded to AVG 7.0. Lately my computer just hasn't been the same. It seems as though it's really using up my resources, caused display problems, and just doesn't act the same in general. Over the past two years this computer has run GREAT and if there ever was a little glitch, it was easily solved. Now it bogs down and has more major problems. I restarted my computer recently, did the ctrl+alt+del thing and noticed that my CPU is running at near 100% all the time now - with almost nothing running. In the processes tab, I see that a file called csrss.exe is using 30-50% of cpu usage now. From just a little research it seems that this can be a virus. Now I've also started noticing the links that show up on webpages under certain words, leading you to advertiser sites. Any help would be appreciated. I'm doing another full scan with AVG now, but I don't think I'll have any luck.