cvs.lock problem?

I just started getting the following CVS error repeatedly. Can anyone 
else reproduce this?

cvs server: failed to create lock directory for 
`/sources/public/2001/DOM-Test-Suite/tests/level3/validation/files' 
(/sources/public
/2001/DOM-Test-Suite/tests/level3/validation/files/#cvs.lock): 
Permission denied
cvs server: failed to obtain dir lock in repository 
`/sources/public/2001/DOM-Test-Suite/tests/level3/validation/files'
cvs [server aborted]: read lock failed - giving up