Has anyone every seen this before, if my BDC is shut down or is rebooted we have problem accessing other resources on the network, for example, if i reboot the bdc i can't access the exchange server which is running on a member server. The PDC and another BDC are still running, it happens only with this 1 BDC, if I rebooted the pdc or other bdc we have no problems, does anyone know what could be causing this??