Problems after upgrading

I just upgraded to WordPress 2.0 and everything went smooth. When i logged into the admin section it did the one step upgrade and then sent me to the admin panel. The front end of the site is working fine but some things don’t work in the admin section.

First when I click on Manage I get the following error

WordPress database error: [Unknown column ‘user_level’ in ‘where clause’]
SELECT ID FROM wp_users WHERE user_level <= ’10’ AND ID != 1

Secondly when I click on edit on any page, I see the write post page but none of the fields(like the title and post) are populated.

I upgraded the plugins and I tried disabling all plugin’s but still no luck.

I turned off the rich visual text editor.

Server Information : PHP Version 4.4.1 / Apache/1.3.34