WoW has been DC'ing for everyone lately, not just botters. A couple of days ago, I DC'ed and wasn't even botting yet. I logged back on to my account and looked at realm status. There were a number of realms down. When the realm came back up trade chat was full of people talking about how they and friends couldn't log on to several other realms either. There was a thread about all the DC problems on one the major WoW forums, although I can't remember which one. I don't think it's just a HB issue.