Quit and Discard Windows in Lion
http://mactips.info Quit and Discard Windows in Lion: Lion tends to automatically open windows that were open when you quit an app. This can be very handy or very annoying! Here's how it works and how to make sure you're not caught out by this new feature when it unexpectedly shows documents you didn't want it to.
More info at: http://mactips.info/2011/09/quit-and-...
