Problem solved finally. The cause was that the file <MAGNOLIA HOME>/WEB-INF/config/default/magnolia.activation-keypair.properties in one of the author instances was different from the same file of the other author instance.
The problem was that there's a load balancer before each Tomcat and when you landed in the author instance with the incorrect magnolia.activation-keypair.properties file, you wasn't able to publish, that's why the problem was "random." Thanks for the replies mjablonski! -- Context is everything: http://forum.magnolia-cms.com/forum/thread.html?threadId=814f4e5f-555c-4644-aaa0-b557b61a70d7 ---------------------------------------------------------------- For list details, see http://www.magnolia-cms.com/community/mailing-lists.html Alternatively, use our forums: http://forum.magnolia-cms.com/ To unsubscribe, E-mail to: <user-list-unsubscr...@magnolia-cms.com> ----------------------------------------------------------------