You need to let world write to val-tags, I think:
amaterasu 1078 /usr/packages/xemacs% echo $CVSROOT
amaterasu 1080 /usr/packages/xemacs% cvs -z5 update -dP -r sumo-2001-12-11 packages
cvs [server aborted]: cannot write /pack/xemacscvs/CVSROOT/val-tags: Permission denied
--- and, also, the sumo tags are sticky (at least sumo-2001-09-29 is),
which is probably wrong for dated tags like the sumo tags are. I spent
several seconds in confusion when I did a checkout from the new
and found nothing had changed in over a month! :)
`The situation is completely under control. All of them were killed.'
--- Alim Razim, for the Northern Alliance, demonstrating fine
command of traditional Afghan prisoner control techniques.