I beleive that this is exactly what is happening! I ded degraf, and it worked better..as in it got 4 tracks on before it kicked the disc out instead of 2...i was havinf MAJOR screw ups untill i put all the music on one directory..was copying some from kaza, others form napster etc. But even with defrag still not perfect....and it is a brand new computer..youwould think my hd could keep up.