I know this is a known bug, but I wanted to air it out a bit more, as this is another new circumstance: This isn't after a session timeout period, but on initial page view - first page I'm seeing when I open my browser.
B E A R 4 5 4 Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.14) Gecko/20080410 SUSE/2.0.0.14-2.1 Firefox/2.0.0.14