I had problem with my 2 NIC stepping on each other's IRQs.
I fixed the problem by doing two things.
I went into the bios setup and disabled sio1 and sio2 to release
their irqs
and also turned off the bios plug-n-play option.
My motherboard also had an option for type of operating system was
to
Shared irq's are a hardware and motherboard issue, not a operating system
issue. You have to be able to setup your hardware NOT to use shared IRQ's
if you can.
This has been a problem on PC's since the first IBM PC rolled out, and
still continues today. That is why special multiport cards
