Installing CS5 on top of CS4

I've just installed a CS5 upgrade on top of CS4 which itself was an upgrade on top of a full CS2
I'm planning now on un-installing the "2" and "4" to just leave the "5" in situ
Is there any technical reason for leaving them in situ
Any answerrs will be gratefully received
Many thanks
Harrold3

Photoshop does not install "on top of" its predecessors, but along side. As you have seen, they can all coexist, though you can only run one at a time.
That said, the uninstaller for older versions of Photoshop chances undoing some of the file associations that the later installer has set up.
For this reason, most people advise just leaving them in situ, if you're not hurting for disk space.
And who knows, you may find something you think isn't working the way you expect, then want to close Photoshop and go back and open the old version just to see how you had it set up.
-Noel

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Mark,
Sorry that we did not have a quick and easy answer for you.
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