There's something wrong with 'your' method... if I look to old posts with positive AO points for (I saw them in my AO points list) the post status says nevetheless... "the AO point level for this post is even" (when it has to be positive, cause the only points to it were pos. ones) and the dot for the pos. points is...red.
Is this a bug? Has some1 else the same experience?