Mine went through just fine about a week ago. Probably getting overloaded with all of the requests. It costs a lot of money to get a server so I doubt Microsoft has the means to buy one....:) Economy is bad you know...!
It worked fine on Saturday, gave me the same error on Monday, but worked great on Tuesday. Try a slower time. Just keep trying back. Perhaps try a different internet program or from a different computer. Still, it is probably just their servers.