Know every version of iTunes installed on your machine? I do.
I've installed the following versions of iTunes on my machine:
Know how I know that? It seems that all Apple software on Windows (iTunes, QuickTime, and Safari, at least) leaves their traces in the following directory: C:\Documents and Settings\All Users\Application Data\Apple Computer\Installer Cache\
313 MB of space is what I would recover if I deleted all the folders they created. Yikes.
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