Research and Development
If your Google Chrome browser is acting awkward with fonts (displays all “A” characters, or default font turns into Times New Roman instead of serif fonts), you may need to clean your Mac OS X Font Cache.
Quit all running applications (otherwise, you may see font oddities after using the command), then open Terminal (in Applications -> Utilities) and run this command:
atsutil databases -removeUser
If you want to remove the font cache for all users, use the following command and provide your admin password when asked:
sudo atsutil databases -remove
Then you should stop and restart the ATS server with these commands:
$ atsutil server -shutdown
$ atsutil server -ping
A restart or a logout/login is recommended, especially if something still looks odd.
There are plenty of tools out there to access these maintenance processes that are built in the system, without having to deal with the command line (Onyx, MacJanitor, Cocktail).