Running MySQL on OS X Lion Server

Hello together,

I have OS X Lion Server wich was upgraded from Leopard Server.

Now I want to run the MySQL Server.

/usr/bin/mysqld_safe --user=mysql &

produces this error in thte file

/var/mysql/<hostname>.err

21218 19:39:41  mysqld started
121218 19:39:41 [Warning] Setting lower_case_table_names=2 because file system for /var/mysql/ is case insensitive
121218 19:39:42  InnoDB: Started; log sequence number 0 43655
121218 19:39:42 [ERROR] Can't start server : Bind on unix socket: Invalid argument
121218 19:39:42 [ERROR] Do you already have another mysqld server running on socket: /var/mysql/mysql.sock ?
121218 19:39:42 [ERROR] Aborting
121218 19:39:42  InnoDB: Starting shutdown...
121218 19:39:43  InnoDB: Shutdown completed; log sequence number 0 43655
121218 19:39:43 [Note] /usr/libexec/mysqld: Shutdown complete

Definitley there ist no mysql server running at all.

After all I decided to delete the contents of /var/mysql and to run

mysql_install_db --user=mysql

But this didn't change anything.

This is the content of my /etc/my.cnf file:

[client]
socket=/var/mysql/mysql.sock
[mysqld]
socket=/var/mysql/mysql.sock

Can anyone give me some advice on how to get MySQL runnning?

Thanks in advance

macmartin