Customer is using QNX 6.4.1 SMP 8x way on a 2x Xeon (each 4-way + hyperthreading (disabled)) board:
Intel S5520UR board
SATA SSD, 4GB RAM, DVD, Intel dual NIC  (pro1000PT).

The attached  hw-info file (get_hw_info is great!) file shows the PCI setup

There are 4 GigE ports on the board - 2 from an 82575EB chip, 2 from an 82571EB

The 82571EB NICs seem to work fine - can send/receive very well

The 82575 NICs see link status and see receive packets, but after ~200 packets, the received OK count stops and th SQE 
error count starts incrementing. The source shows that SQE represents the RX dropped count.

The slog shows an Unexpected irq cause 0x40, which is RX overrun.

The pci config *looks* OK in terms of allocations. Interrupt assignments seem OK too.

Running *just* the 82575 ports did not make a difference.

Any suggestions / known issue  ?

Thanks

Dave