problems upgrading from 4.6.5 to 4.7 CVS

I followed the update instructions listed with the release ( see below). I get the following error messages when I run the last step (see end of post). Any suggestions?

Thanks.
Rich

// $Id: UPGRADE.txt,v 1.2 2005-12-10 19:26:47 dries Exp $

UPGRADING
---------

1. Backup your database and Drupal directory - especially your
configuration file in 'sites/default/settings.php'.

2. Log on as the user with user ID 1.

3. Remove all the old Drupal files then unpack the new Drupal
files into the directory that you run Drupal from.

4. Modify the new configuration file to make sure
it has the latest and correct information.

5. Run update.php by visiting http://www.example.com/update.php.

Fatal error: Cannot redeclare system_update_173() (previously declared in /var/www/database/updates.inc:1628) in /var/www/database/updates.inc on line 1689

Warning: Unknown column 'referer' in 'field list' query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'Unknown column 'cache' in 'field list'\nquery: UPDATE sessions SET uid = 1, cache = 0, hostname = '192.168.0.105', session = 'messages|a:0:{}', timestamp = 1140914959 WHERE sid = '620c7fd5fb6f3dcabc372c1e37241c91' in /var/www/includes/database.mysql.inc on line 120.', 2, '', '/update.php', '', '192.168.0.105', 1140914959) in /var/www/includes/database.mysql.inc on line 120

Warning: Unknown column 'referer' in 'field list' query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'Unknown column 'access' in 'field list'\nquery: UPDATE users SET access = 1140914959 WHERE uid = 1 in /var/www/includes/database.mysql.inc on line 120.', 2, '', '/update.php', '', '192.168.0.105', 1140914959) in /var/www/includes/database.mysql.inc on line 120