Firefix claims an update is available, and so I click to get it installed (I am running 5.0). I get a message that the install failed and that I need to make sure no other copies of FF are running on my computer. ??
The bigger issue is that it tries to run the update every time I click on a URL (like from an email). And so it opens a window to locate a browser, then starts the update - which then crashes with the message about making sure no other copies of FF are running.