why?

[zhygavin]

We have a wingate server with two network cards,Recently the clients often can not browse and receive - send e-mail ,but can use QQ(a chat progaram),after we stop and start the engine,everything is OK,this appears several times erveryday.
os:windows 2000 server or windows 2003
wingate 6.5.2

[zhygavin]

Who can help me, I am so sad now . I have reinstalled the machine several times today , but it still appears. This happens from last month. I must stop and restart the wingate engine several times every day.

[genie]

When this happens, can you, please, check memory usage and number of threads for wingate.exe process in Task Manager?