The longer answer(s) would be yes & that won't work.
Object Dock by design is for any user access - it will even put a default folder in each My Documents (on xp - not sure of vista equivalent) to keep their downloaded backgrounds, icons, etc
Just because it's installed and available to all doesn't mean they have to use it and it doesn't automatically pop up and run on each user - if they want to use it's there, if they don't want to use it they don't have to
