This site is undergoing maintenance: I am in the middle of upgrading from Drupal 6 to Drupal 7, and as you can see for yourself quite a few things do not yet work as they should. Thank you for your patience while I try to get everything back into shape.
Update, 19 June 2012: Most of the site should now work again as before. The former site theme (Sky) unfortunately is no longer available with the same design, so for the moment I'm leaving the site on the core theme, Garland. On the plus side: Comments are now protected again with reCAPTCHA.