We are using Autoblog to feed our main blog with content

We are using Autoblog to feed our main blog with content from all our subdomains.
The problem is that we are founding duplicates post (sometime more than 5)
I read many thread, none of them solve the problem.
I´m guessin it may be a problem with post revision or because all post are planed for a future date.
Any help?
PD: no duplicated post in the feed and
Super post cleanes plugin is not good for us
http://wordpress.org/plugins/super-post-cleaner/
Thanx