Please upgrade to the version 2.4.7. This problem has been fixed there.
I am still having the same issue. I just installed the update that was released today 2.7.8. It is sometimes double and triple posting on Facebook. I have seen it go as much as 4x at once.
I am not sure why this is...but do you have any suggestions?
We took out our own cron posting module that was causing duplicates from 2.7.
If you are still having duplicate postings it means that you need to re-configure WP Cron on your site. You are getting races, so it might be the time to move from WP Cron to real cron.
I am using Unix cron script on the server that I manually configured. I am not using WP Cron.
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