I've had my Wii U since day 1, and recently the WiFi has been dropping out every so often. Sometimes resetting the console solves the problem, but usually it doesn't. I don't think it's my broadband hub because my iPhone and other WiFi devices report no connection issues. I recently upgraded my hub which is supposed to have better WiFi technology and is supposed to have less 'dropouts' in connection.
Does anyone else have similar problems with their Wii U or is it just me? As you can tell, this is highly annoying for me as it prevents games from being played online, and downloads get halted when the connection is lost.