Did you disable SMB2 on the server?

>One of our customers upgraded to Server2008 R2 recently.
>I have been getting a lot of Random errors (C0000006)
>If I get the error on an update routine ( whuch does a lot of processing stuff like Total on x to Myfile) , I rerun the routine, it may work.
>
>For instance, I have just now run the routine (which takes about 5 minutes) , and got the C00006 error up twice , in different places.
>On the third time, it ran ok.
>There was nothing different in the 3 times I ran the routine, no users logged on to the network, so I am at a loss to know whats going on
>
>Any help appreciated,
>Tia
>Gerard