I have a client/server application that uses RPC for the client to communicate with the server.
Fairly regularly, I get an event in the Application log that the RPC connection was disconnected:
Client callback failed ((0x80010108) )
I have the Windows Firewall disabled on both machines. I've even run the client on a second computer with a clean Windows XP install without any group policies.
This has been going on for a long time and no one has been able to figure out why it's happening. The same client/server app works fine at other client locations.