Kronolith displays the map using late rendering. Openlayers has a
bug with late rendering and Bing maps:
http://trac.osgeo.org/openlayers/ticket/2711
Tracked locally as Bug: 9111.
Don't advertise Bing until this bug is fixed in OL.
<values>
<value desc="Google">Google</value>
<value desc="Yahoo">Yahoo</value>
- <value desc="Virtual Earth/Bing">Ve</value>
<value desc="CloudMade">Cloudmade</value>
<value desc="Various Open Sources">Public</value>
</values>
<values>
<value desc="None" default="true">Null</value>
<value desc="Google">Google</value>
- <value desc="Virtual Earth/Bing">Ve</value>
<value desc="Yahoo">Yahoo</value>
</values>
</configenum>