A funny thread in Bonfire, this one, about someone not logging out of DZ.com, and someone posting sick shit ostensibly under his screen name, got me thinking. Currently, you have to go to the Home page and click "Logout" to be logged off. But if you just close your browser window, you'll still be logged in. That way (assuming Cookies and History aren't deleted), someone else using that computer could get back on to DZ.com and immediately be logged in as you. The mischief could get ugly.
Must that feature be included in DZ.com? In other words, why not, as some other websites do, have a "keep me logged on" box to either check or not check, so that if you don't opt to check the box, you'll automatically be logged off just by closing the browser?
There's a logout button in the "My Stuff" menu to the left of the screen (unless you disabled that..).
Did you perhaps click on the "remember me" checkbox when logging in? I'm using Firefox and closed and re-opened just to check - I was logged off automatically.