Nortel VPN Client

Does anyone have any experience with this? We are in the process of deploying a VPN and are having some issues and the common denomiator seems to be this software. Some start the issues right away on a fresh load of 2000, others decide to wait a few weeks before things flake out.

What happens is the Net Logon service stops starting up and things on the network act flakey, IE doesn't respond it just sits and spins, various other things don't work.

As soon as we uninstall it, things return to normal and the Net Logon service does as it should.

Well the last couple that decided to do this, the software has been uninstalled and most things are fine, but the group policies are no longer coming down to these 2 machines.

HELP!