All day today we have had problems with our NW6.5Sp3 servers crashing out
with this error:- "ERROR: critical sectioning prevents requested fatfs
operation". The server need rebooting and they are ok then for a random
amount of time before they crash again. We have 20 or so servers on the
network but this error is only affecting a few of the NW6.5 SP3 server's
with the new server.exe and NSS 3A files.

These server's have been in place for weeks with no errors and doing a
packet capture on the network reveals no wierd traffic. I'd look at the DOS
partition but as it is happening on different servers in different subnets I
doubt this is the problem. They are mostly Dell PowerEdge 4600 by the way.

Any ideas? TIA