cvs client suddenly "permission denied" when updating directories

[Thomas Voss]

Hello,

after upgrading my linux distribution (SuSE 7.0 -> 7.3),
my cvs client has problems with creating new directories
into the workingspace.

After saying
$> cvs update -d progdir

I get:
cvs [update aborted]: cannot make directory CVS in progdir: permission
denied

The new directory 'progdir' has been successfully created by the cvs
update, but it seems cvs has problems with creating the inner 'CVS'
directory. This happens every time I try it. It might also be problems
in conjunction with NFS, because my workingspace is in the NFS. But
the clock is synchronized, my umask is ok (027), and there are no
problems when creating a directory manually (e.g. I also can crete the
'CVS' directory by hand inside the 'progdir' after cvs update has
aborted).

Can anyone give me a hint with my problem?

Greetings, Thomas