User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5 When trying to start Firefox from Windows toolbar, intermittantly get an error message that says Firefox is already running and that I have to close the active session of Firefox to restart. Clicking OK on error message turns off the message and seems to stop Firefox. However, once this message appears it becomes and endless do loop. In order to recover, I have to restart the pc. I have checked task manager after turning the message off and Firefox is not active so it should start. Reproducible: Sometimes Steps to Reproduce: 1. Intermittant, unable to define exact steps to reproduce 2. 3.

you might search http://kb.mozillazine.org/Category:Issues_%28Firefox%29 which also has links to the forums.

Reporter, do you still see this problem with the latest Firefox 2? If not, can you please close this bug as WORKSFORME. Thanks!

Have not seen the problem since the upgrade to the latest version of FireFox.