I know this is a really old thread, but I couldn't resist replying since I was looking everywhere for the answer to the same question ChrisH posed. Fortunately, I discovered the answer and want to share it in case anyone else runs into this same situation. In order to get something more useful than, "Installed/not applicable", go to your "All Updates" and choose whatever view you want, i.e. Any Approved updates. Right click on one of the columns at the top and you'll have the option to view additional columns. I added two columns, which solved my problem: Installed and Not Applicable. Bingo! For each update, I can see how many machines it installed on and how many were not applicable. Anything with a 0 for installed and some number for Not Applicable, I quickly disapproved. I hope someone else finds this helpful.
