Network troubles (SIOCSIFFLAGS: Resource temporarily unavailable)

[barnabas@knicknack.net]

I just got a new system (Asus A7V mobo, 800 MHz Athalon processor,
Matrox G400) and am trying to install a network card that I already
had on hand.  I have installed Slackware 7.1 (kernel 2.2.16).

The card is a Kingston card based on the RealTek RTL8139 chip.  The
driver modules loads fine, although it reports the card at IRQ 0 (yes,
that's zero).  When I try to ifconfig the eth0 interface, however, it
reports the messages: "SIOCSIFFLAGS: Resource temporarily
unavailable".

I have the same card in another machine which works fine and this card
also works fine under Windows ME in this machine.

I also tried a Netgear card (Tulip chip) that I had in another machine
and saw the same message.

For this reason, I'm guessing its a Linux software issue with this
motherboard, but haven't been able to find anything yet.  Any
suggestions either as to the problem or as to where to look?

Thanks.

Eric