Mysqld fails to start on RHEL 64 (Linux 2.6.9-42.0.3.ELsmp SMP Mon Sep 25 17:24:31 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux) w/ zcs-NETWORK-4.5.0_GA_612.RHEL4_64

From zmsetup.log

* Creating required directories
* Generating mysql config /opt/zimbra/conf/my.cnf
* Creating database in /opt/zimbra/db/data
* Starting mysql server
* Failed to connect to mysql...retrying
* Failed to connect to mysql...retrying
* Failed to connect to mysql...giving up!
Done

Initializing logger sql database...
*** Running as zimbra user: /opt/zimbra/libexec/zmloggerinit

* Creating required directories
* Creating database in /opt/zimbra/logger/db/data
* Starting logger_mysql server
* Loading schema /opt/zimbra/db/loggerdb.sql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/opt/zimbra/logger/db/mysql.sock' (2)
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/opt/zimbra/logger/db/mysql.sock' (2)
* Setting random password for mysql root user in zimbra local config
* Setting random password for mysql zimbra user in zimbra local config
* Changing mysql root user password
^G/opt/zimbra/logger/mysql/bin/mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/opt/zimbra/logger/db/mysql.sock' (2)'
Check that mysqld is running and that the socket: '/opt/zimbra/logger/db/mysql.sock' exists!

Any help would be greatly appreciated.