Re:Confirmed! (Score 1)

I am sorry if this has been resolved but I could not spend the time reading through all the comments against Vista. I had this issue, very frustrating but a logical approach found the answer and I get better performance ironically. Disabling the Write caching from the your SATA controllers fixes the issue. If you run a benchmark before and after you may even notice the throughput being higher once disabled... I am happily getting in excess of 40Mb/sec when copying files now. Sorry if I am way behind on this thread... I usually am!