I have two windows 2000 servers running AD in a small network (less than 50 users). After the systems run overnight, on one of the servers, when you browse the network, and click on the domain, you get "[servername] is not accessible. The remote computer is not available". On the other server, you can browse with no problem. I don't see any applicable events in the event log (at least I don't think they apply). What do I need to look for?!?! Note: When you reboot both servers, all works normal until the next morning.