Im having a problem with one of my customers
Randomly PC's go offline (not all at same time) and have noticed SRV event ID 2012 (While transmitting or receiving data, the server encountered a network error. Occassional errors are expected, but large amounts of these indicate a possible error in your network configuration. The error status code is contained within the returned data (formatted as Words) and may point you towards the problem.)
I have replaced the network switch, network card in server (to another type as well), made sure server is up to date, run SBS 2008 BPA, and put server on a different connection to the switch.
Any one got any other ideas to try. Typically it never happens when Im on site