Some people using Mario Kart Wii got this new error code.. checking on Nintendo.com :
http://www.nintendo.com/consumer/systems/wii/en_na/errors/results.jsp?error_code=20102&system=Wii&locale=en_US&action2.x=0&action2.y=0So well.. Nintendo started fighting back.. good thing they do!

Some supposed to be Nintendo employee posted on mariokartwii.com :
As kinda expected - fakePlease note.. this post could very well be fake! It looks real because of all the nice dates added to it but beware these dates could be completely random! All I can say.. the information seems to be valid so far.
I know someone who is banned and he used codes online, I am not and i used codes in private online matches AND ALL OTHERS KNEW I WOULD - which kinda matches the text.
One minus would be: he claims that IPs were banned.. just to tell my opinion.. IP bans are 100% inefficient.. while in some countries fixed IPs are regular, in most European for example each online user has a dynamic IP.. meaning.. once he logs out and logs back in into Internet he has a new one.
Still no confirmation known, handle the information like a raw egg!