Nope, I can assure you that this is not a glitch. Nintendo is simply performing some server maintenance on both the Wii Shop and the 3DS Eshop, as they did back in August 2011. Server maintenance is just the process of keeping a server updated and running so that a network can operate smoothly.
Recently, we had about five people create threads or post comments that the Club Nintendo site was sometimes not allowing surveys to be completed. Perhaps this has something to do with the eShop or Wii Shop being down in some way.