Bug in kernel 2.6.20

I transfered an Adaptec 29160 SCSI card (and 4 disks and one tape drive) from my dual MP1800+ to my disks box based on an Asus A8V yesterday night. I recompiled its kernel (upgraded from 2.6.18 to 2.6.20) to include support for SCSI tape. I rebooted and it didn't detect my SATA drives. Googling the problem I found that there is a bug with the VIA SATA drivers in 2.6.20. The workaround is to include "pci=nomsi" as a kernel argument. Also discussed here.