You point up exactly the issues I wanted to avoid by starting from scratch. For example, I want to have my Firefox in the dock and then delete all personal bookmarks, leaving my personal set-up for FF otherwise intact. And so on.
Once somebody posts the most appropriate method for duplicating your original home account (
Edit: i.e. /Users/grelber) in your new guest account you'll get precisely that, because all your personal prefs are located in /Users/grelber/Library.
I think I could work it out for you, but others are more knowledgeable, particularly as respects Lion.
Edit 2: Keep in mind that your new account will not sync with your existing account other than by your effort, i.e. any changes you make when logged in to /Users/grelber will
not be replicated in /Users/guest.