I have a nw6.5 sp6 server that a user could login say at 730, and work fine all day, I look at the server and they will have been locked out several times though they never logged out of their workstation nor logged in on any others.

Checking C1 and they are in fact locked out.

Any thoughts?

Clients are all xp sp2, nwc 4.91sp4, zen 701 ir3a.