HI!
I am running a NT4 server (SP6) with Wingate 5.2.3 I have had the same problem for years an no other or new version of WG client and/or server helps. It's a 192.168.0.x network.
THERE IS A DEADLOCK when a XP client tries to access the file system on the NT4 machine. With W98 or W2K client access there is no such problem.
The deadlock makes the Wingate server drop out in the Wingate client window of all clients. The WG server has to be restarted, than everything works again. VERY disturbing for XP clients and sysop.
/A