Update: Kyle has unearthed the cause of the problem, which is not the RAID controller itself, but the process used to make the ICH6RW southbridge. Unresolved problems in the fabrication of ICH6RW are leading to current leakage, which can prematurely drain the CMOS battery. Without battery backup, the BIOS will fall back to default settings that will not enable the RAID to boot. The [H] believes that some 100,000 boards are affected and being pulled from the channel. Intel has not yet made an official statement.