Q: Apple TV keeps disconnecting from Wi-Fi

I have a brand new Apple TV. But it keeps disconnecting itself from the wireless network. So I'll be watching Netflix, and suddenly it's no longer streaming. I can't do anything after that. Can't watch trailers. Can't access my computer. Nada. The Apple TV is suddenly not connected. Nor can it connect when I try. It supposedly has the latest software (I bought it yesterday and had the Genius Bar guys update the software before I left the store), and I know the issue isn't the network because I have other wireless devices in my house that work fine and stay connected when the Apple TV drops from the network. Please help.

I have to keep restarting the thing to get it to connect again. That's ridiculous. I am ready to take this thing back for a refund. Very disappointing.