After more than a year and a failed attempt to submit a WP7 application (back then very complicated if not living in the US), I tried again.
This time, the old submission was still hanging. Trying to update the 'missing details', the App Hub loops infinitely and finally crashes with ugly asp.net exceptions (both FF and IE).
Resubmitting my app ends in the same state, as documented here.
Is it really that hard Microsoft ? Let's see how long the support email reply takes for them..
http://forums.create.msdn.com/forums/p/90433/541630.aspx