When I go to the edit page of a user on rails3.finn.de
And I add a project and a role for the user
Nothing happens and a 404 not found is returned
for the Ajax request

It might actually work on the first time
causing a create on the member according to
the route. After deleting the same member
and readding the user with the same role, the
route looks like an update on the membership
and the request returns a 404. Begin of the deletion
End of the deletion