Same error, still looking for a solution. Ubuntu 8.10 LTS, Zimbra 6.06 FOSS.
Code:
Unknown suffix 'P' used for variable 'port' (value '6PuWfUZsU9gWx1NxFvWbBkzuuKGQNp')
/opt/zimbra/mysql/bin/mysql: Error while setting value '6PuWfUZsU9gWx1NxFvWbBkzuuKGQNp' to 'port'
Unknown suffix 'P' used for variable 'port' (value
/opt/zimbra/mysql/bin/mysql: Error while setting value '6PuWfUZsU9gWx1NxFvWbBkzuuKGQNp' to 'port'
Stopping mysqld...failed.