I've put up with it, closed every other programme, restarted the computer, kicked it, opened it up and closed it time and time again. But I just can't ignore it any more and it's driving me crazy. As I play my multiplayer games (Freelancer + CSS) I'm coming across the same problem and it ruins gameplay for me. After a ping check i'm pretty much within the margin of whats considered acceptable. Hardly any packet loss and a pretty good latency, wireless connection is fine and everythings tickerdyboo.
But then while playing, i'l get an enourmous nugget of lag that usually lasts from 3-7 seconds on both games. It usually comes every few minutes, but gets more frequent if there's more interaction with players or encounters with players or bots.