Just thought I would warn people. XBox Live is up and down like a jack-in-the-box at the moment as Microsoft are doing updates to both Live and the XBox.com site.
The updates went out yesterday in the States, and it looks like they are happening over here in Europe now.
So if you loose Live, then you know why. On a side note, you can't use the Media Centre Extender if your not signed in, bummer! Luckily I got logged in, and am now watching The Unit season 2 episode 5, and have just watched episode 5 of Heroes, which is just getting weirder by the episode!