I have read the question about using Google Apps to login to stackoverflow, etc. It seems there is a problem with the release of DotNetOpenAuth in use right now. I see the release of DotNetOpenAuth 3.4 is supposed to have better support for Google Apps, and it is now available. Will the various stack properties be using version 3.4 soon?
We may switch at some point, but we had some stability concerns -- we're by far the largest consumer of that library, and we want it to be WELL tested before updating.
We now use DotNetOpenAuth, so if the library supports it, we should too.