Installation Help Needed

I tried to install the new WordPress 2.5.1 and followed all the instructions for how to do it, but it did not take.

Basically, when I finished, I went to the wp-admin/upgrade.php link and it said that my database has already been upgraded.

When I log back in to the admin, it tells me I need to upgrade to version 2.5.1, which has already been done.

Am I missing something? According to the upgrade guide, I have done everything I was supposed to do, so I need some help?

Thanks