When running Fusion under Mavericks and on a secondary monitor, the menu bar fails to hide. The only workaround I have found is selecting "Use All Displays in Full Screen Mode," but that just messes with the primary display (i.e. hides the dock among other things)
modifying the info.plist - fail
option "hide menu bar in full screen mode" - fail
fusion tech preview - fail (but faster load times so that's awesome)
any ideas?