Answered
I've enabled the key accelerators in Preferences, and they work just fine for selecting the hand tool and such, but for some reason 'U' and 'S' (and Shit+U for that matter) don't do anything. I've tried reinstalling Reader X but it's still not working. This is seriously frustrating me and I'm sure it's something simple that I'm overlooking but I can't think of anything else. The files that I've tried to comment in are not protected files.
Kelly McCathran
Adobe Community Expert
Certified Technical Trainer+