Q: setting date and time?

When I start my Apple TV it won't complete the setting data and time prompt when it starts up.  The wireless network is a full strength and connected.  Everytime i try to type my apple user name and password to start home sharing it says that I have one or the either inncorrect.  I've typed it a milion times in the past and to double check i logged out of itunes on the comp and logged back in, so i know i got it right.

anyone else have this problem?