We have an issue here, at the ISP I work for. For some clients only, when they connect using Windows 2k or XP, they get a PPP Timeout or Link Control Protocol Terminated. (718 or 734). BUT when you try the SAME user account on a Win 9x based machine, works fine. We've been testing this for weeks with the tech department and we can't find which setting is causing this. The only way to fix this, is to migrate the user over to another domain we have, that works with a different type of auth server. (I don't have the details though). And then it works fine. !??? We're clueless. Any help would be really appreciated.