Okay, over the last few days I’ve done some more burns different ways.
Firstly, not sure what you mean by IDE. If you mean are both the dvdrom and dvd burner running off the same hdd, then yes. The dvdrom is internal, the dvd burner is external.
Secondly, yes there are other programs using the computer, email is open and sometimes I am sending emails. Sometimes I’m opening word documents or excel documents.
Finally, I tried ripping a disc to the hdd first and then burning it at 8x, it then nearly burned at the 8x speed. Nearly, still took about two minutes longer then it should have, but better results then with the on the fly copy. It would still be faster for me to just copy on the fly at 4x though then to take the time to rip it to the drive and then burn it at 8x. Generally I only burn at 4x anyway to insure a good burn, but it does frustrate me that I cannot burn at 8x if I wanted to.