I've decided an easier way to cater for all site options in my app is to use reflection to pull out all the static properties in you Sites. This works fine but as I have tested it I have noticed two sites that actually don't exist.
Ubuntu. You have http://api.ubuntu.stackexchange.com
Electronic Gadgets. You have http://api.gadgets.stackexchange.com
Both of these don't resolve. If they are dead sites. Can you remove them for from the API in the next release please?