Hello, openlayers.org server is sometimes very slow so please replace in your maps http://www.openlayers.org/api/OpenLayers.js by http://toolserver.org/~osm/libs/openlayers/latest/OpenLayers.js
So it can load in 0.2s instead of nearly 10 seconds. (It use now gzip as compression for transfer, so it's really fast.)
Greetings Kolossos