Tentar instalar joomla em linux (problemas com o mysql)

Tenho estado a tentar instalar o joomla mas ele está-me sempre a atrofiar com o mysql...

Acho que ele já está instalado mas não o consigo abrir:

[email protected]:~$ sudo apt-get install mysql-server mysql-client mysql-admin
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-server is already the newest version.
mysql-client is already the newest version.
mysql-admin is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up mysql-server-5.0 (5.0.38-0ubuntu1) ...
* Stopping MySQL database server mysqld [ OK ]
* Starting MySQL database server mysqld [fail]
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing mysql-server-5.0 (--configure):
subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.0; however:
Package mysql-server-5.0 is not configured yet.
dpkg: error processing mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server-5.0
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)

E quando o tento abrir dá-me isto:
[email protected]:~$ mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

Alguem me pode ajudar?