Just to be clear, on my laptop I have PS7 (full version), CS2 upgrade, CS4 upgrade (just acquired and waiting for my free CS5 upgrade). Same on desktop, except PS7. As I understand it the upgrade installs on the machine as a self contained programme, rather than sitting on top of previous versions. Therefore, once I'm happy CS5 is running satisfactorily on my machine, I can safely delete earlier versions, or at least I can delete 7/CS2 and keep CS4 as back up.
Wright or wrong?