Even in Lion I haven't updated any apps that came with the OS/iMac (mid-2011) since I don't use any of them, even the games.
Just to give you an idea of how much I don't use, following is a list of apps that arrived with my iMac and Mac OS X Lion which I've never opened, much less used, and other than via their names have no idea what they do or what they're for:
Address Book, Automator, FaceTime, Font Book, GarageBand, iCal, iChat, Image Capture, iMovie, iPhoto, Mail, Stickies, and all but 3 of the 23 "utilities".
I did add Adobe Photoshop CS5 (but haven't used it for several years) and Microsoft Office 2011 (primarily for Word, which I use all the time; I haven't used PowerPoint or Excel except to read products of others).
As I said, my needs and wants are minimal.
