I've seen that KB, when i'm ruining "mysql -uadmin -p`cat /etc/psa/.psa.shadow` mysql" i'm getting:
ERROR 1045 (28000): Access denied for user 'admin'@'localhost' (using password: YES)
ruining: /usr/local/psa/bin/admin --show-password result is:
/usr/local/psa/bin/admin: No such file or directory