@Ryan McCue - But you come at this from a developers point of view. Adding that line to the WP Config file is a no brainer. Try telling a Novice WordPress user to do that and it's not that easy. Sure, the argument could be made that new users won't know about post revisions or won't care and perhaps that is a problem in and of itself.

I've fixed the CommentLuv issue as I had the plugin set to have the box checked by default.