Problem: iceweasel, firefox or mozilla will not start and the message you get is something like this one:
Iceweasel is already running but not responding. To open a new window you must first close the existing Iceweasel process or restart your system
First question - are you sure it is not true? Are you logged in somewhere else? Did you leave yourself logged in remotely? If so, please try to close that session.1) If not, or if the problem persists read on.
Most likely there is a lock file preventing the browser from starting. That lock lives in the profile sub-directory of ~/.mozilla/firefox directory.
I have created a script called unlock-iceweasel that should find the lock file(s) and offer you the option to remove it(them). Try and see.
If you still have problems after running the script, write me.
— Greg Priest-Dorman 2008/02/27 14:04