It used to be my e-mail and facebook accounts would recognize names. For example, if I wanted to send an e-mail to Joesmith@google.com, i would hit the "j" key and all the names or addresses that start with "J" would pop up. That no longer happens.
same with facebook. If i wanted to tag someone, I would start typing their name, and it would show a list of people as well.
That no longer happens. As recently as Friday the 25th it worked fine.
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions, Open websites, and some Preferences.
To Reset Firefox do the following:
Go to Firefox > Help > Troubleshooting Information.
Click the "Reset Firefox" button.
Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
Firefox will open with all factory defaults applied.