Every band has a bad live show; go to more than one and your opinion will have more merit. Seen them literally 100's of times and they rocked out with their cocks out 90% of the time. The other 10% they fucking blew. Such is life.
I saw them at Leeds Festival this year and they were AWESOME! Even though it was the last day and everyone was basically dying from tiredness and drunken antics, they were brilliant and still got eveyone jumping up and down! Love them!!