I have S&M installed on my laptop that I take from place to place. I have a profile chnager that automatically adjusts my network settings between locations. This includes switching off of different interfaces at different locations to save power (such as turns my wireless off when i'm at certain sites that don't have wireless access). After this happens my S&M key becomes invalid (obviously the key is generated based on hardware), at several of the places i'm at there is a proxy which stops me from being able to connect to the registration server, and therefore I can't load my saved games (because it only allows me to play in Demo mode).
Is there a way around this? It means that alot of the time I can't play the game.