Blizzard officially files against WoW Glider

http://www.markeedragon.com/u/ubbthreads/showflat.php?Board=wownews&Number=363199

Blizzard and Vivendi today filed against MDY Industries and Michael Donnelly in the state of Arizona USA. Blizzard is seeking injunctive relief and money damages against MDY. […] They believe Glider allows players to cheat, giving them an unfair advantage and that they believe Glider encourages Blizzard customers to breach their contracts for playing the game. Last they claim that Glider is designed to circumvent copyright protections.

its posted on a forum, tho, so at this point its just speculation.