My DVD burner has been acting up ever since i did some upgrades to my machine. I can't access anything through my E drive (DVD-+RW) while it's in UDMA mode and PIO mode performance isn't all that great. Any suggestions? So far i've checked the jumpers, power cables and IDE cable (brand new cable too). My system is a PIV 3ghz, 1GB ram and XP Pro. The DVD burner is set to master (Jumper, not cable select although it is on the end) and my DVD-rom is set to slave (jumper and cable position) I had this problem with the same drive in my previous computer which had XP Home. I just left it in PIO mode figuring it had some conflict in windows, but now on a clean install and with Pro, this little bug is just now too annyoing.