I used to be able to rip and burn a DVD in around 13 minutes using an AMD Opteron 170 (dual core OC'ed to 2.6Ghz, XP Pro, 2GB and Elby), now with the MacPro (Octo, 16GB, XP Pro and Elby) it actually takes 30 minutes for the same movie. Shouldn't the MacPro be able to perform the task a lot quicker?