070204 21:49:10 [Warning] No argument was provided to --log-bin, and --log-bin-index was not used; so replication may break when this MySQL server acts as a master and has his hostname changed!! Please use '--log-bin=PP1-bin' to avoid this problem.
070204 21:49:11  InnoDB: Started; log sequence number 0 43655
070204 21:49:11 [ERROR] Can't start server : Bind on unix socket: Permission denied
070204 21:49:11 [ERROR] Do you already have another mysqld server running on socket: /var/run/mysqld/mysqld.sock ?
070204 21:49:11 [ERROR] Aborting

070204 21:49:11  InnoDB: Starting shutdown...
070204 21:49:13  InnoDB: Shutdown completed; log sequence number 0 43655
070204 21:49:13 [Note] /usr/sbin/mysqld: Shutdown complete