Up-Grading WordPress…

Hey

I have a problem with up-grading wordpress

I click:
http://socialsupermen.com/blog/wp-admin/upgrade.php

Which then takes me to:

http://socialsupermen.com/blog/wp-admin/upgrade.php?step=1&backto=

But then instead of going to the right page it says:

http://socialsupermen.com/blog/wp/

Not Found

The requested URL /wp/ was not found on this server.

I looked everywhere, and couldnt find a file just called wp

You guys got any ideas about what is going on?

Thanks in advance!