I am having issues with some of my private forums on a website.  For some reason, they seem to disappear when ever they want.  It ends up missing for all authorized roles whom should be able to view the forums.  There is no error that shows with this.  It seems when I restart the application that they re-appear, but I should not have to keep doing that.  Any ideas?

Are you using anything 3rd party that works with the forum data? I don't know of any issues involving this unless the permissions aren't setup properly.

The only other modules running on the forums page is the "Latest Posts" "Top Threads" and "Top Posters".  And it is only the Private forums that are disappearing, does not matter what roles are assigned to it, or if it is moderated or anything like that...   I thank you Crispy in advance for any help you can offer.  This is becoming a tedious job keeping an eye on the forums and restarting the website when the forums go missing.