My Redhat 7.1 machine seems to be having a prob with its SMC Ultra card.
It worked fine with 6 but now...well the machine can ping itself but it
can't ping the other machine on the network.  When I try I see the
lights blink on the hub but nothing gets through...

I see a bunch of these in "dmesg":

NETDEV WATCHDOG: eth0: transmit timed out
eth0: Tx timed out, lost interrupt? TSR=0x3, ISR=0x43, t=101.

Any suggestions?  I spent hours searching the web for this error
yesterday and I couldn't find anything that seemed to apply to me.

Brady