> 
> Power cycling did fix the problem.  
> 
> It is still a bug though because if you have to power-cycle, you
> can't switch from one os to the other remotely.   Otherwise I could

Most likely a bug in the PROM. Earlier versions do not properly reset
all devices. A `reset' command (if the prom has it) will do the trick
also.

The messages you see originate from interrupts from devices which are
not configured in the kernel.

-pk