recenly, my rig (specs in sig) started getting really sluggish. to open a folder, it takes like, 60 seconds of solid HDD activity. when i select an item in windows explorer, the computer freezes for a few seconds, and i can't click on anything. also, FF started taking a really long time to open up. my 120gb sata drive is 60% full. i restarted, scanned with kaspersky, spybot, adaware, microsoft anti-spyware. i defragmented. still nothing helps. anyone know what to do next? oh yeah, this is windows 2000.