Current SMP with ACPI dies in a second

[Tomi Vainio - Sun Finland]

My old MSI-6120 SMP system has been unusable quite a while with ACPI.
I've got these so far:
 - Couldn't get vector from ISR
 - vmstat -i shows high interrupt rates and system is very slow
 - kernel trap 12 panic

Latest problem is something like this:
pfs_vncache_unload(): 2 entries remaining
current process = 27 (irq17: fxp0)
kernel trap 12
stray irq20

Kernel config, dmesg, acpidump, etc. files available at
http://tomppa.iki.fi/~tomppa/FreeBSD/

  Tomppa