How 'well behaved' are Mac and third party apps in general (if its possible to generalise?) The reason I ask is that on Win XP (my iMac is "in the post" its hit and miss what happens when you install an app. Sometimes they ask if this install is for multiple users, other times they don't (iTunes being one of the worst offenders) and then the first time another user logs on or uses the app they get a very confusing (to them) license acceptance screen. What would typically happen in OSX install? Or is there no such thing as 'typical' ?