Just wasted 2 hours at a Sprint store with a hot sync problem. 650 stopped hot syncing as of 2 days ago. I've reset both the laptop and 650 many many times and could not for the life of me to get it to hot sync. User id's on both the treo and notebook are set correctly. I thought maybe the USB port on the notebook went bad so checked it with the card reader which works fine. So I was convinced the USB on the 650 is bad. The tech at the store said he was able to hot sync it by creating a new user name. I had the laptop with me so tried to hot sync and it went through!!!! This f**king thing is driving me crazy!!!!!!!