ubuntu mysql 5.0 -> 4.1 (4.0 compatible) downgrade
sudo -i
rm -r /var/lib/mysql #!ATENTION! ishtrina pacius duomenis ;) backup!
dpkg --force-all -i /var/cache/apt/archives/mysql-server-4.1
dpkg --purge mysql-server-4.1
dpkg -i /var/cache/apt/archives/mysql-server-4.1
#sugrazhiname duomenis i vieta
ir nauduodamiesi straipsniu kovertuojame duomenis