After I installed the drive I burned a couple full cd-r's in about 10 minutes each. I'm just using drag and drop in WinXP Pro. The burner is primary on secondary IDE channel, I have a 24x cd reader as the secondary. To do dvd's, which is why I got the drive, I got a 40G drive which is the secondary on the primary IDE channel. Primary is a 20G drive where XP and everything else lives. Both HD's are 7200. I think the burn time got slower after the new 40G drive was installed. I don't understand how this could be since the new HD in on the primary IDE channel. Thanks for any positive comments.