eth0: Out-of-sync dirty pointer

I just got a whole bunch of these messages:

eth0: Out-of-sync dirty pointer, number1 vs. number2.

Where number1 and number2 don't match. They're each about 25000,
and they mismatch by about 15. Too much of the time I also get a
kernel oops right after this.

This happens on a 2.6.7 kernel equipped Celeron machine using a
RealTeK RTL8139 equipped network card.

I searched the web for this kind of problem and found a bunch of
trouble in kernel version 2.3! Gosh that's old. I also found
problems with some Tulip cards due to some hardware change in
the card. But, I didn't find anything at all related to a 2.6
kernel. Could someone please give me advice on troubleshooting
this? Is there a better place to ask this question?

Thanks much....

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