My IBM Intellistation MPRO has a 3.8 Gig 64 bit XEON processor (Prescott). The Device manager shows 2 processors, but the HAL is ACPI but does not say multiprocessor, as it should. Also Task Manager only shows 1 thread, and is checked to show separate threads for each processor. It used to show as multi proc & show 2 threads, but long ago... Not sure when it got confused... Is there a way to change the HAL short of re-installing, as that will cause many problems, re-installing software & arguing with vendors to re-issue licenses... (Microsoft... Adobe... etc.) >.<