but lots of people get it.
You are the only person I have heard complaining of this.
Possibly your computer.
...old player ghosts are not removed...
The area of the castle wall brick seems to extend a little passed where the brick ends. If you have a 1x1x5 between two castle wall bricks, it leaves very little area to paint the 1x1x5.
I cannot duplicate this problem.
http://www.youtube.com/watch?v=BA4Z8oDUb1sIt seems like you can only paint the bricks between 2 castle walls from the bottom or the very edge.
I guess I've already fixed it then.