[Mike Weber <ethereal@xxxxxxxxxxxxxxxx>]

I'm running ethereal 0.10.6 with winpcap 3.1 beta 3 under winXP with all 
the patches windows update wanted to install except service pack 2. I'm 
running an Athlon64 3400+ on an NVidia nForce3 250Gb - based motherboard.

While going through an analysis I noticed that probably ~90% of the 
segments generated from my machine are reported as having bad TCP 
checksums. There doesn't seem to be a problem transferring data; I've 
transferred gigabytes of data over this link over the last few days and 
haven't had trouble on a scale that correlates with the number of bad 
checksums I'm seeing. (I have had a problem where certain email message 
bodies never get ACK'd, but I don't know if that's a checksum problem or 
something else. It is the reason I broke out ethereal, though.)

Is this something to worry about? Is it a bug in winpcap or ethereal? Or is 
the checksumming code in my NVidia NForce3 chipset (does tcp/ip offloading) 
broken?

Thanks for any information pointers or advice!

Regards,
Mike