Problem adding a user to multiple groups

[Eric.Sammons@frit.frb.org]

I have set up ldap authentication in
my Linux environment.  All seems to be working as well as expected;
however, I am now trying to assign a user to another group.  I see
that the attribute gidNumber is not a multi-value attribute for a given
user (uid=user,ou=People,dc=my,dc=domain).  I do see that memberUid
is a multi-value attribute for a given group (cn=wheel,ou=Group,dc=my,dc=domain).
 Having added a uid to this memberUid attribute it seems to have no
impact on the given user?  I am using the actual numeric uid, is this
correct?  


Thanks!
Eric Sammons
(804)697-3925
FRIT - Unix Systems