1. Uninstall mysql
sudo apt-get autoremove --purge mysql-server-5.0sudo apt-get remove mysql-serversudo apt-get autoremove mysql-serversudo apt-get remove mysql-common
2. Clean up residual data
dpkg -l |grep ^rc|awk '{print $2}'|sudo xargs dpkg -P
3. Install mysql
sudo apt-get install mysql-server
sudo apt-get install mysql-client
sudo apt-get install php5-mysql
4. Run the following command to check if the MySQL server is running:
sudo netstat -tap | grep mysql
5. Restart mysql
sudo /etc/init.d/mysql restart