After I download, let's say, update for CS5, where does the update files go to? Am I supposed to delete them myself or the system will clear it by itself? Thanks in advance for your input!
It all depends on what app, you're talking about. Many apps update in place, CS5 probably stores the update in a ~/Library folder somewhere. I'd not worry too much about cleaning up after installs. They generally do a good job cleaning themselves up