I use a spyware screening program that notifies me when an a program has been added to start when Windows starts and this morning it notified me that UserFaultCheck had been added. Investigating this program showed that it has something to do with a "memory dump". Last night was the first time I ran Poser 6 for any length of time and did quite a few renders (nothing complex at all), so I'm wondering if this is what triggered this program to be activated by Windows XP. Just curious - not too concerned if nobody knows the answer.