If I have VPN connected to use Entourage to get email off exchange server, my wife can't send messages via Eudora, which is what she uses to access her email. If I disconnect VPN, Eudora works fine, but of course Entourage then disabled. The OS won't allow us to have multiple network configurations. This was never a problem with the PC. For quite some time I would use MS-Outlook (connected via VPN) while my wife would use Eudora, simultaneously, and there was no problem. Not til we went to Mac.