I have a test installation of WP on my computer, under Squeeze, that runs under nginx 1.0.4 and the distributed php package(s). The software itself is installed under the url /blog/wordpress. When I tried to upgrade to 3.3.1, everything broke down, so I started over: create an empty database, move the original installation aside, untar the distribution, and just start over. First problem: /wp-admin/install.php yields a 404, but the installation works nevertheless, except that it hangs after pressing "Install blog" (abort, press the button again -> OK). Second problem: The admin interface is basically unstyled, as the urls /wp-admin/, .../load-styles.php, and .../load-scripts.php all yield a 404, while every other url works.
Putting another installation alongside this, but powered by Apache2 and mod_php worked just fine. Do I see a reoccurrence of