I found a very simple way to tell exactly what applications got updated with the 10.5.2 installation. The way I found out was to simply look at the modification date/time stamp on each application. In my case any that said 8:49 AM were part of the 10.5.2 installation. To my semi-surprise, most of the applications in both /Applications and /Applications/Utilities were updated with this update. Enjoy, Alex.