I have an old installation with wp 2.3.3 and have now installed 2.8.3 (removed everything, backuped db, copied 2.8.3). The wp-config.php is configured correctly with all new keys
If I open /wp-admin/ I am asked to INSTALL wp, not to update.
Obviously I can not install wp, I must update the database.
What is going wrong, where can I fix this problem?