Quote from Athenrye on official forums
At the risk of stepping into bad territory, I'd like to make a comment on this whole matter. While I'm not pointing fingers at anyone, it should be noted that Korlash has recently been performing investigations for illegal coin gain, suspicious items, and other such bits of ban-worthy behavior. It should also be noted that several thousand accounts were banned yesterday while the game was down under maintenance. It should also be noted that there have been no changes to the APR or any other function that could result in an account being banned, so there aren't any false-positive issues on hand here. Finally, I've been looking into a lot of the claims being made around the forums about accounts that were blocked after the maintenance in case there has been some sort of error, but have not been finding any evidence of a false ban or APR error.
Draw your own conclusions.
Link to the topic: http://forums.gamersfirst.com/index....pic=83886&st=0