Error wp_usermeta does not exist
|Reported by:||scottmcdaniel||Owned by:||ryan|
This more of suggestion for the upgrade text.
On the page /wp-admin/upgrade.php prior to running the upgrade (FF 1.5 Mac) I got an error about wp_usermeta does not exist as well as a warning that headers had already been sent.
Dumping my cookies got rid of the error and allowed the upgrade to proceed.