I have a single site domain in the Pacific time zone and a domain member who splits his time between the east and west coast. He's finding that when he is on the east coast, he'll change the time zone in Windows but that it will revert back to Pacific time after a while. When he is on the east coast he is not connected to the domain, so he is not syncing with the DC. He will connect to the domain occasionally via VPN, but the time change occurs more frequently than that.
Does Windows XP cache domain time zone info and periodically force the PC back to it? I am baffled by this one.
Can anyone suggest a cause/resolution?