[chrishajer]

So, http://www.addiva.net is OK, and later, when people type in http://www.addiva.net you will direct them to http://www.addiva.net/blog/home ?

Sounds like a configuration issue in WordPress. There is an option to choose what is displayed on the front page (Settings > Reading). you can select your latest posts or a static page.

Yes, the default address for the blog’s main page is index.php, and what is shown there is what I described changing above. Check those options and post back if it’s not what you expect to see based on what is configured.