Has the latest Firefox upgrade caused font problems? Are fonts randomly appearing in an ugly bold italic format on certain places? I recently had this problem myself and a lot of research into it suggested that upon upgrading, some of the main system fonts become corrupted. The most commonly corrupted font was arial, so your first port of call would be to replace this font with a clean version. Here’s how:

1. Download a fresh version of Arial: http://web.nickshanks.com/fonts/microsoft-core-web-fonts

2. Close your browser and anything else currently using the Arial font on your system.

3. Delete the arial font from C:/WINDOWS/fonts

4. Run the installer to install the fresh version of arial.

5. Reboot your computer

6. Start your browser up again and check to see if the font problem has resolved.

Now, here it is important to note that it might not be Arial causing your problems, but one of the other main fonts used in websites – particularly courier, trebuchet, helvetica, verdana or times new roman. If the problem still hasn’t resolved after replacing Arial (in my case I needed to replace Helvetica), then repeat the process with different fonts until you find the right one. Good luck!

Disclaimer: this article assumes you are comfortable and confident making changes to your computer’s system files. bewarethegeek.com assumes no responsibility should following any of the changes suggested here cause a system failure.