In BOA 2.0.7 stable IDN site creation login link without www. gives page not found error using www. leads to login page
The login link uses the accented url, not the xn-- punycode url
In fact the problem is much worse - the site without the www does not resolve at all now.
This may be related to http://drupal.org/node/1963056 - no o_contrib_seven modules (or directory) is created when adding a static platform and site to it.