For all those of you able to read or translate the funny German language: Rokop did a short test of the PFW mentioned above: http://www.rokop-security.de/main/article.php?sid=803&mode=thread&order=0
Although they put the stress on installation - which should be one of the most important points for the majority of users - they made it quite clear that they wouldn't recommend this software at all. Above all it's not freeware.