[Tilesathome] Tiles not renderable

[Norbert Hoffmann]

I wrote:

>there are two tiles given out to the renderers, that seem to have some
>problem in the data(?)
>
>For nearly three days the tiles
>http://tah.openstreetmap.org/Tiles/info.php?x=3449&y=1891&z=12 and
>http://tah.openstreetmap.org/Tiles/info.php?x=3450&y=1891&z=12 are returned
>by every renderer with NoData.

I think http://tah.openstreetmap.org/Tiles/info.php?x=2161&y=1323&z=12 can
be added to the list.