When I type Hedgehog as my team's name, it becomes Hedgexxg. Hedgehag and other stuff - fine. Team17, wtf!

That looks like the hopelessly unintelligent auto swear filter is kicking in. Search the forum (both WOW2 and WOW subforums), as this has been discussed at length before :)

It obviously considers the word "ho" a profanity...