[CentOS] System drops off network after a few minutes

>if it literally drops in a few minutes, run wireshark and leave it
>capturing all traffic on the LAN interface until it craps. then stop the
>capture, and look at the last set of packets.

John,
I am sure I can stoke this up, but how do I analyze the traffic after? Its sitting idle when this happens, so I suspect there shouldn't be much anyway!
jlc