The most common answer I have found is that "as usual" third party software such
as "Ulead Straight to disc SDK" seems to cause the problem and removal of them fixes
it. Another answer I have viewed but not tried is on your IDE controller in Devices
change it to ultra dma 2 mode. Then put in the OFFICIAL release of SP1. Again they
have rewritten how file transfer and drives are handled now. that is one of the big
changes.