Can't zoom in as far as usual...

Anyone got any idea why i ccouldn’t zoom in as far as usual just now? Same with both Mapnik and Osmarenderer, viewing through the front page. Is it because I wasn’t logged in? Why would this be?



In mapnik I can zoom in to layer 18 (though there might not be any rendered tiles available). In Osmarender max zoom is level 17. Logged in/out makes no difference.