Ubuntu for Non-Geeks, 4th Edition

Common Problems with Applications

So many applications are available for Ubuntu that it would be impossible to go through each one and point out what might possibly, some day, go wrong. Instead, in this section I've chosen to provide some general advice on how to deal with misbehaving programs, plus a sneaky little section on a particularly common Firefox problem. If it is something specific that you need to handle, it's never a bad idea to try looking at the help files for a given program. Selecting Help ▸ Contents should get you to a manual for most software. Failing that, a Google search often does the trick for me.

Firefox Says It's Already Running

When you exit Firefox, it sometimes takes a while to close itself down properly—the window will ...