If I remember correctly, it wasn't until the UZ BIOS was released that I actually became happy with my KT7-RAID. Before that, it locked up all the time. One major problem was that I had a non-RAID drive as slave on IDE3, and whenever I tried moving/copying anything from this drive to the RAID array, the system slowed down and eventually froze.
I can't verify the BIOS version atm, as I'm using another computer right now, but I'm pretty sure it was UZ. And remember to get the 1.0.3 HighPoint drivers as well when upgrading the BIOS.
Edit: grammar
