One of my clients have trouble with slow logins to their Novell server
They are using XP SP2 and client 4.90SP2.

After writing username and password and pressing enter, it takes up to
30seconds to login in. Sometimes they get the error that no tree can be

I noticed yesterday that if putting a miniswitch between the computer and
the network outlet, login takes only 5 seconds!!!

Where is the problem?