In the Mac OS it is possible to change the default program the operating system will use to open a file when you double-click on it. After you have changed this file association, though, you may want ...

One of our readers reported that all the file extensions have changed to some unknown file format. If so, it could be a virus! If a virus has changed all the files extensions to unknown applications, ...

If your Firefox profile gets corrupted and you have to create a new profile or your computer crashes and you have to reinstall Firefox, the extensions that you enabled in your previous Firefox ...