I am also frequently seeing this error on community.jivesoftware.com? We are also planning to upgrade to Jive 6 and this is definitely a concern for us.
I noticed that you posted this as a Discussion. I would recommend posting this as a Case so that it is entered in for our Support team to take a look at. Support Cases are monitored, but Discussions like these are not. Cases vs Discussions in the Jive Community
Please let me know if you have any questions.