erikD

Wohoo! Fixed it!
Go down to line 87 in wp-blog-header.php. There you will find this line:
@header(‘Last Modified: ‘.$wp_last_modified);
Change it to:
@header(‘Last-Modified: ‘.$wp_last_modified);
I can’t believe something as simple as a missing dash had been causing internal server errors all along.

The permalinks for the feeds don’t work in 1.2. Apparantly it’s fixed in one of the nightlies. I suggest you fix it by manually editing the index.php file and replace <?php bloginfo(‘rss2_url’); ?> with the url to your rss feed. You may have to replace <?php bloginfo(‘comments_rss2_url’); ?> with wp-commentsrss.php as well. You could also grab a nightly, if you’re comfortable with that.

Make a file with the following code:
<?php phpinfo() ?>
and save it and upload it as phpinfo.php.
No answer from my server admin yet.