Well, I scanned an IDE hard drive filled with viruses, and ever since then my computer hasn't been running on it's top performance. I've purchased System Mechanics, and TuneUp Utilities, but it still continues to run sluggish.
I'm running out of ideas here.
I have posted this on at the Malware section (http://www.bleepingcomputer.com/forums/index.php?showtopic=135714&st=0&gopid=791829&#entry791829
), but there isn't anything vicious in my computer.
I'm running Windows XP SP2, 512 MB ram, 2.80 Ghz. Prior to hooking up the external hard drive, my computer would excellent, yet now, there's always something going on with the computer that I don't know about.