Warning: mysql_connect() [function.mysql-connect]: MySQL server has gone away in /usr/lib/php/pixilink/config.php on line 33

Warning: mysql_connect() [function.mysql-connect]: Error while reading greeting packet. PID=17112 in /usr/lib/php/pixilink/config.php on line 33

Warning: mysql_connect() [function.mysql-connect]: MySQL server has gone away in /usr/lib/php/pixilink/config.php on line 33
I cannot connect to the database because: MySQL server has gone away