I think some of the database install stuff in the latest cvs is a bit broken :/
I've installed it on two servers from scratch and when going to wp-admin/install.php I get the following above the cvs logo:
[Table 'wordpress.wpcvs_options' doesn't exist]
SELECT option_name, option_value FROM wpcvs_options
get_settings: Didn't find setting hack_file
I went on with the install and get this:
and can't log in. If you try to log in you'll see loads of errors
Think maybe some files/settings are missing ...