User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 Firefox has a 'big' problem. If Firefox it's closed and Downloads (Firefox Window) is not closed when re-entering Firefox all saved tabs are gone. I mus close Downloads to make sure that the tabs will never disappear. Firefox must restart with saved tabs even if Downloads is present. Reproducible: Always Steps to Reproduce: 1.Enter Firefox 2.Download something and exit Firefox but Downloads Window continues download 3.Re-enter Firefox and the tabs are gone Expected Results: Make the tabs work in every situation

First, create a new profile, http://support.mozilla.com/kb/Profiles, and see if this happens there. Then, I think this is a dupe.