I just bought a dell demiension about 3 months ago. I have windows XP. Just recently when I listen to music, I have noticed a lag in the music. After playing with numerous things trying to figure the problem out, I noticed that when my hard drive light is on (spinning) is when i hear the lag in music. I also noticed that sometimes my mouse will hang as well. There are no vuruses, I defrag almost twice a week. It is a 40 gig hard drive and so far have only used 5 gigs. So i know that it is not running slow. Does any one have any clue as to why this is happening or how to fix it. Oh, I use winamp for my music player, but I also tried it in Windows Media and it does the same thing. Any help would be great.