"...MAC address buffer refresh times: It seems that at every LAN party there is a self-proclaimed know-it-all with a weak ass box, well at least there are at ours. And this know-it-all swears up and down that there is a "sweet port" on the switch and he is determined to find it. So he goes through and switches out his computer with another persons
computer until he is satisfied that he has found the "sweet port." So what ends up happening on some switches? Everybody ends up not being able to see the network, why? Because the internal MAC address buffe in the switch hasn't refreshed, so its still trying to switch the packets to the computer that use to be there..."
FULL STORY @ GIDEONTECH (http://www.gideontech.com/reviews/csds1216/)