The time wasting piece de resistance, as it were, had to be when Hart decided his hair needed drying with the towel he had at the back of the goal. (A towel which must have been sodden anyway). I think the ref might have actually spoken to him then, although as Burnley then decided to bring on a sub (which I don't think Hart would have seen at the time as he was too busy with his head in his towel) he technically wasn't holding up play.
On another occasion Hart actually looked like he was going to take a relatively quick free kick after I think Sissoko had been flagged offside. The ref then pointed out he was taking it from the wrong spot, which whilst technically the right thing to do, just gave Hart the perfect opportunity to take a slow saunter over to the other side of the box and take time checking with the linesman that he was in the right place, and of course the ref did nothing.
Can't blame Hart if he's allowed to get away with it.
And to add to the sins of the ref : when one of the Burnley players had treatment on the pitch, the ref didn't notice that the player just got up and carried on without leaving the field of play, until the noise of the crowd and one of our players drew his attention to it.
Very poor from the ref.