One context in our less than optimal flat tree can not be browsed. What I mean is, I have a GW user, with an invalid or non-existent LDAP association, I click More, Associate and browse to said container, and get this:

*Unable to search LDAP Server
Uncategorized exception occured during LDAP processing; nested exception is javax.naming.NamingException: [LDAP: error code 80 - NDS error: cannot go remote (-779)]; remaining name 'o=YTC'

As a work around, I selected the Post office, clicked more, Directory associations. Then entered the context in question, and was able to pick up the non-associated user normally.