I updated to the 2.6.14 release today and was greeted with a kernel panic on reboot. It looks like some behaviour has changed regarding the kernel boot option "iommu=memaper=x" flags. I have a dual opteron 246 with 6GB of ram on an ASUS K8N-DL. It apparently doesn't have an IOMMU on board, so I have been able to function with the iommu=memaper=3 option up until now. The panic was pretty short, no code or pointer to output. It just referenced the fact that I didn't have an IOMMU and halted. Sean