ldap group name resolving problem

Hi,

I have problems with debian etch Linux clients resolving group names served by our LDAP server. user and passwd work because I can login properly. "getent group" properly shows the group served by the LDAP server. eg: #getent group mygroup:x:1000:chris

However "id username" only shows LDAP served groupIDs but not their names. eg: #id chris uid=1002(chris) gid=1000 groups=1000,20(dialout)

This means that I can't do things like chgrp eg: "chgroup mygroup directoryname" gives: "chgrp: invalid group `mygroup'"

I am using nscd and nsswitch.conf says: passwd: files ldap group: files ldap shadow: files ldap

Any ideas?

Thanks!