process hangs on 13xx smp kernels (oops spoke a little, too soon)

[Anne & Lynn Wheeler]

dell poweredge 2400 only has bios option to turn motherboard usb on/off. 
turning that option off/on in the bios appears to have no effect on the 
hanging symptoms. it previously was on ... i've rebooted smp 1366 kernel 
4-5 times with usb off and processes attempting to use network activity 
eventually hang. the 2400 has two 10/100 enet interfaces, one on the 
motherboard and a second card.