Just like how the nicest, most expensive car needs regular oil changes, Microsoft's online gaming service needs to be taken down from time to time for tweaks and fixes. On Tuesday, October 17 the Xbox Live network as well as Xbox.com will be unavailable. Microsoft expects this maintenance to last for 24 hours. That means no Live multiplayer gaming, no downloads, no Live, period. The official Xbox website says that the downtime will be used to add "some cool stuff." During this downtime, you'll still be able to boost your gamerscore and earn achievements.