Just did the WP2.0 upgrade. Now when I hit http://domain/blog/wp-admin I get a completely blank page. I can go to /wp-admin/edit.php or any of the other pages ok, just not the default page. I even tried setting up a completely vanilla WP2 install where I just copied over my old wp-config.php, and used the default theme with it, but still no admin page. Anything else to try?