How dare you speak badly about Aion!? :O
Yes, there was (lot less now) bots, like in every MMOs. Thing is, they took there time to work on a patch to fix the crash issues that was affecting many people with Vista. That done, they bought a dedicated GM team for moderating. And the bots got less (banned 27 000 accounts last week).
Everything explained
here.
The next phase of Aion will be breathtaking, be warned of the beauty:
http://na.aiononline.com/board/videos/view?articleID=22