What do you call "lag"?
It has been explained a countless number of times. There are three different phenomenons that are accounted as lag: bad client performance (aka "fps lag"), bad server performance (aka "server lag"), and bad connection latency (ie, lag). The latter only makes a difference regarding gameplay when there are very few users on the server (because of the bad server code/protocol). Ask Znurre who lags as much as anyone with a ping of 30-40ms. I myself play with less than 100ms. The two formers, client & server lag, are experienced by *EVERY* player, it's not a matter of OS/configuration or location.
Now there might be a difference between different platform users (Windows or Linux) or driver/videocard users, but by any means it should not be called lag.
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