win2k server: "Unable to talk to the network, network down or insufficient sockets" error!

Hi, everyone,

I installed serv-u, mysql 5.0 on my win2k server. I encountered a wierd
problem recently. When I restart the server each time, the system works
well. But about one or two days later, both serv-u and mysql are down. When
I try to restart SERV-U, it says:
Unable to talk to the network,
network down or insufficient sockets?

I replace serv-u with another ftp software, ArGo Soft ftp server, similar
sockets error was also found.

When this socket error happens, my php program cannot connect to Mysql
Server either.

I scan my server with Symantec AntiVirus 10, but none viruses were found.


Is there anybody can help me? Thanks a lot!

VVIPI