tedddee: I've been trying to figure out what this is as well... I'm not affected by it (mIRC 6.16) but I've seen others disconnect because of it. Interestingly, I've seen Windows and Mac users disconnect because of it so what I'm wondering is.. what kind of router and modem do you have? I'm wondering if one of them could possibly be the culprit? If its not the OS or the client then what else could it be?