Networks "Network cable is unplugged" message

I have got the desktop with OS 2003 and with 2 NICs (both of them are 3Com) installed, though one of them is disabled and other connected wired to ADSL Gateway Linksys , between time to time I am receiving this annoying messages,please see pic

http://img337.imageshack.us/img337/5196/networkcableunpleggedanhu3.jpg

 

Well, make sure the cable locks into the socket decently (definately should hear a click), and verify if the cable isn't worn and torn...

Failing that (seriously), "When logic and technology fail, hit it with a hammer", or just give it a tap

 

What router are you on? The D-Link DI-529? i think does this obsessively. Known fault.

 

I'm guessing that if you have line of sight to the LEDs on the front, when you see the error message in 2003 you will also see the power LED blinking rapidly then the LEDs behave as if the router is being power cycled.

If you Google "linksys network cable unplugged" you will find no end of people with this same issue, also using Linksys routers.

I personally experienced the same thing while using (if memory serves, I'm posting from work) a BEFSR41 (cable router & 4 port 10/100 switch).
It's nothing to do with your settings on your PC or on the router, it's just ropey firmware written on the cheap.
I have now given up and replaced the router with a 3Com.