<A target="_blank" href="http://www-01.ibm.com/support/docview.wss?rs=463&uid=swg21391768">Technote 1391768 covers how to hide the subject of a meeting</A> marked "Private" in the R&R calendar. The default in versions 7.0.3, 7.0.4, 8.0, 8.5 is to show the description of a private meeting.