[CentOS] Permissions problem

What am I doing wrong here?  I need to be able to write to /var/cvs.
This used to work before I moved these groups into an LDAP directory
instead of /etc/group:

[scarolan at watcher:/var/cvs]$ touch test.txt
touch: cannot touch `test.txt': Permission denied

[scarolan at watcher:/var/cvs]$ ls -ld
drwxrwsr-x 4 cvs cvsgrp 4096 May 18  2008 .

[scarolan at watcher:/var/cvs]$ id scarolan
uid=4002(scarolan) gid=4002(scarolan)
groups=10000(operations),10001(cvsgrp),4002(scarolan)