you didn't include the method to do it for vista and windows 7. On xp the lowered mtu users actually have a disadvantage because they have to change it in registry via a restart. On later windows you can change it back and forth with a bat file as much as possible without restarting your computer, all you have to do is cc and viola your lag is fixed, thus making it possible to make it very very low. Here's what do on win7 with a few clicks only--> open client first, lower mtu to 48, let client.exe estabish a connection with it, and change it back to 1500 (and no ccing or logging), and all the 48 mtu side effects are gone. You cannot do this on xp; it's not even possible to pass the hackshield check with 48mtu.