For no reason my site runs to /wp-admin/install.php, this is not a new site, and it is not the first time.
I 've this problem with version 3.0.4 too.
Now it seems solved, upgrading to new versions, but as I've said, I've this problem installing a fresh 3.0.4, to, when I've finnished installing a new wp 3.0.4 my url is /wp-admin/install.php, after repeat the installation everything runs normal.
But Now is a old site running wp, and happens again.
Can Someone help?