Blank tiles on Open JS Maps API

Hi

It seems that there is a problem with map (tiles) loading when using Open JS Maps API. Tiles are not being loaded properly (requests are being stopped and nothing is happening). This causes blank parts of a map that stays there the whole time and not being loaded again later (zooming in and out is not making any difference).

Unfortunately this also has place on openstreetmaps.org when using Mapquest map style:

1. http://imageshack.us/photo/my-images/805/blankzoomin.jpg/ - Locality: Szczecin - Poland (zoom in) -> blank
2. http://imageshack.us/photo/my-images/696/okzoomout.jpg/ - Locality: Szczecin - Poland (zoom out) -> ok

3. http://imageshack.us/photo/my-images/837/blank2zoomin.jpg/ - Locality: Cracow - Poland (zoom in) -> blank
4. http://imageshack.us/photo/my-images/32/ok1zoomout.jpg/ - Locality: Cracow - Poland (zoom out) -> ok

5. http://imageshack.us/photo/my-images/31/partspd.jpg/ - Loaclity: Cracow - Poland (one part is ok, other blank and it stays that way the whole time)


Request header: HTTP/1.1 202 Accepted

PNG API tile request:
http://otile3.mqcdn.com/tiles/1.0.0/osm/18/145594/88856.png - Response: The tile you requested is not available at the moment. Please try again later.

JPG API tile request
http://otile3.mqcdn.com/tiles/1.0.0/osm/18/145594/88856.jpg - Response: The tile you requested is not available at the moment. Please try again later.


This has place when zoom is set to larger values.

Is there a problem with servers or with something else that is causing that situation?