I was updating my Palm Treo with my Windows XP instance in Parallels for Mac. While that was running I was surfing the internet. A MAC OS X dialog popped up, telling me that Parallels Desktop had suddenly died. I filled out the information and clicked on the "Report it" button. I redid the steps and it died again. I synchronize my Palm with my Parallels Desktop instance via USB connection. This did not happen before I installed Build 5584.