Cannot redeclare class wpdb

I’m gonna go out on a limb and say you included/required wp-db.php twice somewhere along the line. ??
Try using ‘require_once()’ for that file.

You have to redo your wp-config.php when you upgrade to 1.0/the latest CVS.

[flushing] i forgot to rename wp-config-sample.php to wp-config.php
Everything works fine. Thanks.