Whenever I exit Safari, (not that I use it as often as I use Chrome), I seem to remember a checkbox for "open windows next time" and I always uncheck it. Then I go to great lengths to make sure all my tabs come back in Chrome, including the session manager plugin. I guess I don't want to depend on this Apple centric approach because I want xmarks to sync my browsers across Windows, Linux and OS X. If I ever got to the point I didn't have to deal with Windows at work, I'd probably go "all in" for Apple's way of suspend and resume of Safari but for now I opt out. Thanks for pointing this setting in System Preferences. I might just switch it off system wide for now, at least until it is supported by Open Office/Libre Office and other third party apps I use.
