>I'm using FireFox as a browser. The tabs are nice but brings up a question for me. When I logon to the UT is there a way to logoff again?
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>With the tab open the UT continues to poll for new messages. I would like to logoff rather than closing the tab, allowing me to log back in at some later time. Is there a way?

There's Logout link on UT main page right above ad images.