I am having a very similar problem. FC4. I have unistalled numerous times and verified that all processes are not working. When I run the install, the only results from the zmcontrol status are:
If I grep for mysql and slapd, they are both running. If I launch mysql, the zimbra table is there, etc. If I run a reload or stop and startup zimbra/zmcontrol, mysql fails to launch. the mysql.sock file (that was in the /opt/zimbra/db/ dir) is no longer there of course.
I'm currently running yum to update the system per another persons poast. As I said, I currently get:
DBI connect('database=zimbra;mysql_read_Default_file=/opt/zimbra/conf/my.cnf;mysql_socket=/opt/zimbra/db/mysql.sock','zimbra',...) failed: Can't connect to local MySQL server through socket '/opt/zimbra/db/mysql.sock' (2) at /opt/zimbra/zimbramon/lib/Zimbra/Mon/StatusMon.pm line 152
Line 152 is the dbi->connect line. Confused? yes I am.
Let me know if you want any logs, etc posted. Thanks, this forum seems pretty awesome as does the pproduct. Would be nice to get off of horde for something more functional.