>> My CATS will lock up under heavy use with just one drive.
>> 
>> I can reproduce it every time if I try to build the Jikes Java compiler.
>
>I seem to recall a similar discussion with ARMLinux on the CATS, so maybe
>there is a hardware element to the problem as well as an OS-related
>problem.

There was an IRQ handling bug in the Linux kernel at one point that caused 
this kind of symptom on CATS machines.  It's been fixed for a year or so 
though and I haven't heard any reports of the problem recurring with Linux;
as far as I know the hardware is OK.

p.