Well the reason I ask is that any other online service routinely take their servers down for "maintenance" whatever that entails. What is so special about QL servers that this is not required? I'm sure all the other companies hosting game servers would love to learn the secret to why QL doesn't have to do this.
It's a subtle change in the way the game behaves, most Quake players are used to fast movement and aiming at the last second, and probably notice it, I certainly do.
I mean if that wasn't the case, then playing on LAN wouldn't give you any advantage to someone getting say 10-15 ping, but it does make a difference. My pings haven't changed according to my lag-o-meter, I get 0 jitter, the only time it shows lag is when someone joins the game, which is a different issue.