Common Mistakes by Mac Switchers

TUAW: Common mistakes made by new Mac users, and I have seen #1 way too many times: they close an application's windows thinking the program has quit. The same also applies to the "maximise" button, as it rarely go full-screen. My personal mistake #1 is, hitting Enter on Finder thinking that it is going to launch the application associated with that file, but subsequently mistakenly renamed the file. D'oh.