Do you have any physical games in the system? Do you have an SD card?
I would go ahead and power down, remove both if you have them in, backup the data on your SD card.. Maybe start the system up with the wireless off, and then turn it on after the system is up (wait until all the icons have loaded. I had a similar problem recently with MK7..)
If you can keep it up and running, maybe make sure your system is up to date.