If you're at work and getting alot of annoying popups with the text "Message from server" and title "Novell Message Popup", then those are broadcasts from the Novell Server to all clients.
Right click on red N "Novell Services" icon in taskbar
Click on "Novell Client Properties"
Go to "Advanced Settings"
Select "Receive Broadcast Messages" from the list
Change "Setting" to "None"
I'm not sure if this actually works or not, but I havnt received any messages yet.