Just wondering if this has happened to anyone else, you talk to the guy in the companions main base (Whiterun) and eventually one of them will give you the "dragon seekers" quest, Basically this is the problem, The sanctuum that the guy wanted me to go to and kill the dragon, has already been explored, and I have already cleared the place( killed a dragon there) before accepting this quest, so the game has decided to put another dragon in, which is bugged, I can't attack it and now I am stuck with the guy from the companions following me around =(. It is also worth mentioning that I have killed another dragon in the meantime and that was fine, although I didn't complete the quest, as I need to kill the bugged dragon.

Hope to hear other peoples experiences, or at least gather some knowledge on the suject, cheers.

I am stuck in the same place on the xbox. when I go to the dragon burial site they mentioned there is no dragon. I have also wandered around killing random dragons with farkas in tow. not only do I not want to finish the game with him tagging along I have lost mjoll as my companion. Really wish someone could come up with a solution for this problem. I am a hundred hours in and dont want to start over. I did see one video where they used the shout that pushes people (unrelenting force) to shove farkas off of a high cliff where he actually died. didnt want to take this route but without an alternative I may resort to trying this.

No, just return to Whiterun and tell him "lets go". He will leave you...