I was reading the question on whether Dumbledore knew Lockhart was a fraud (Did Dumbledore know Lockhart was a fraud?) and the consensus was that Dumbledore knew and thought that the best way to expose him was to expose him to the teaching environment.
I was struck by an uncomfortable question. If Dumbledore knew about Lockhart, and he surely knew about the curse on the position of teacher of Defense Against the Dark Arts (Did Voldemort actually curse the job of Defense Against Dark Arts professor after being denied the position?), was Dumbledore deliberately exposing Lockhart to the curse in the hopes that it would ruin him?