Martin Siegert wrote: > > Is there a way to force all five NICs to use different IRQs? > Or what else can I do to solve the problem? Please boot the kernel with the `noapic' LILO option, or use the -ac kernels. There's a kernel patch at http://www.uow.edu.au/~andrewm/linux/apic.txt which will fix it. Patch has been sent to Linus and approving noises were made. Fingers crossed.