Ok, I have done some several bad things things.
First, I have upgraded from 3.1.4 to 4.0.0 GA, the first thing that i noticed was an error regarding document initialization. I did not mind it first, I first recreate my certificates because i noticed it was already expired. The upgrade is somewhat ok, the only thing that is not working is the document feature.
I dont know what came into me, I downgrade from 4.0.0 to 3.1.4, and normally, it said cant upgrade to 3.1.4, so I install 4.0.0 again, it seems ok, it finished, but zimbra is not starting anymore, it just stalls.
I dont see anything in the logs that can give me any hint:

startup.log only shows:
Starting ldap...Done.

and that's it.

Is there anything that i can do to at least recover the messages?
Zimbra version used is is opensourced version.