the cursor in firefox blinks on and off in the application
Go to Solution.
You may have switched on caret browsing.
You can press press F7 (on Mac: fn + F7) to toggle caret browsing on/off.
Can you download the latest version of Firefox and see if this still happens?
If that doesn't help, try running Firefox in safe-mode.
If it works in safe-mode, that means one of your Add-on Extensions is causing the problem, which will require disabling them all, and then re-enabling them one by one to isolate the problem.
Thank you for your help. That could of very well have happened in some frantic pecking.