error authunix_create_default: too

[bothe at net4.UUCP]

After boot, I cannot mount or unmount nfs-filesystems.
ERRORMSG: URPC: authunix_create_default: too many groups

Invoked at boot time (fstab) all does go rigth!

The same message occures at "rup"

My System: a TARGON/35 (PYRAMID) with
TOS 3.3 (ATT V.2.2 + Berk 4.3)
Earlier releases (TOS 3.1, 3.2) showed the same error

can anyone tell me, where the error comes from ?