We had a user that was recently 'let go' while still in possession of his Palm Treo Pro. We remote wiped it on the exchange server - which worked very well. This user returned the phone and the partnerships etc. were deleted from his account, and his account closed.
The phone is now assigned to another individual - we cannot get it to connect to the Exchange Server to sync at all. We have verified the username/password/domain using OWA - and the phone can surf the web, but it will not connect to the exchange server.