error on scrsaver : bad e-directory?

hi!
someone knows on scrsaver the following error when i'm trying to login
:
UserIsConsoleOperator called NWDSGetEffectiveRights, error value :
254.
it has appeared on nds server and some others but not all.
I've all restarted, i haven't that message anymore but a replica (and
a
server too on the same replica) are in skulk with 625,622,698,254
error.
Synchronization ok.
Server NW6 SP2.
any idea?
Thanks a lot!