ACPI horrors

Probably as a result of the old motherboard: Disabling ACPI seems to stop OpenSolaris crashing (with my recompiled kernel) when ls'ing /dev. This is done by adding acpi-user-options=2 to the boot environment variables. Attempted to force UDMA 5. dmesg still pops up Multiword DMA at various points, but no longer complains about ACPI.