Richard,
I just checked Intel's site and there is an updated Raid driver, I will get this installed to see if it makes a difference. when you first asked, I was just thinking about the Matrix Storage Manager software, not the actual driver. I actually have 7 computers all identical in hardware except 2 which are having the problem and both of them had the hard drive failure. They are also the only 2 with 1 TB drives and the rest of them have 360 gig drives.
Dave