unless this person is gaming and it drops atleast once often more
I had this happen with my Dlink and America's Army...it would send out a broadcast looking for a LAN game and something about it made the Dlink croak...literally. Is it a specific game or any game? If one game seems to do it more than another, you might try to have them play that game while a traffic dump is running on that system...see if you can spot any strange traffic (especially around when the router actually drops)...If its something about a particular packet or a broadcast, you might could take action on the localsystem to stop that from happening...On another note, the POS that I have seems to not really care for alot of traffic and tends to respond by dumping in those situations as well (granted I was doing some rather un-nice port scans at the time, but hey )...


You also might consider signal interferance...are there any wireless components on the systems that are playing the game (mice/keyboards/headsets/etc)...might be something to look into, might not.

Anyway, just my thoughts...

Good luck running it down, I've found it usually tends to be a pain...