If you have an older Adobe reader you'll notice that your system tray now urges you to update.
I really don't mind that. Considering how many systems I run across that still have v5, v8 or v9 (6&7 don't seem to be as popular) I really don't mind that.
I do mind extra programs getting installed with a Java update or a Java Update just not working.
One more good reason to update to Windows 8: no more Adobe updaters and bundled crapware.