I see a few recent support requests, but I can't find a common link between their issues and mine.
I had a functional 2.3.1 setup with a theme but no plugins. However, I decided to move to the subversion method of keeping up, and ran svn co http://svn.automattic.com/wordpress/tags/2.5.1/ - With that, I dropped my themes. (As I mentioned before, I didn't have any plugins yet.) I did not move the theme over yet.
After I ran upgrade.php, my homepage went blank. However, my admin pages were still working. I went to change the theme, but it was already at the default. (I tried toggling back and forth between it and classic, but that didn't seem to help.) I tried http://bettermorning.net/index.php to see if there was some sort of access issue, but there's no .htaccess in there currently and I'm using ugly, default permalinks.
Under mozilla 3, there is no output. Under lynx, I get <<< -- that's it.
Normally, I'd think php issues but there shouldn't be anything there to stand in between.
Any ideas? Thanks!