slow group membership lookup

Hi, 

I am using nss-ldap to resolve users and groups using ldap. However,
when I run 'id' command to resolve a userid (eg. id dodo1682), it takes
a really long time. So, I did a strace id dodo1682 and found that it is
searching for all groups in ldap. ie: 

objectClass=posixGroup 

Is there a way to prevent it from searching all the groups from entire
ldap directory? I have looked at the nss-ldap archives and not found any
authoritive answers on this, only a patch from 2003.

Any help on this matter is appreciated. 

Regards, 

Joe