I have been known to have to wait 25 minutes to get satellite lock on the P2. When it was in for a repair recently, the guy repairing it noted that "I can't get satellite lock on it" When I told him about the regular 20 minute waits, he said he'd try his spare GPS unit in mine and see if that fixed it. It fixed it, so I arranged to buy his unit and have him install it, but then he said HIS unit wouldn't get lock either, and put my unit back in and it DID get lock. Switching between them it seems to be intermittent. Sometimes fast lock times, sometimes no lock. His assessment was "your Phantom is haunted" Any suggestions as to what would be going on?