I am unable to start Firefox. Getting message that it's already running. Can't find my profile using "%APPDATA%\Mozilla\Firefox\Profiles|". Rebooting my computer didn't help. Since I experienced that problem I also noticed that all my bookmarks which I had copied into the Windows Internet Explorer have also disappeared. I am using Firefox as my primary search engine and usually don't use Internet Explorer. I am running Windows 7 on my machine.