Yesterday, I was typing an email when commas didn't work, or I got <'s instead. And CAPS were coming out in my text even though the CAPS lock was not engaged. And when I did engage it, smaller lower case characters came out. Then the browser revered to its original state, all by itself, as if I just downloaded it. And then a FF window appeared saying something about troubleshooting an issue with the browser and refreshing. I refreshed. Didn't do any good, the browser was still in its "original state" (I don't remember, but I think it changed to its original state'' before I did the refresh.) I uninstalled FF and reinstalled. Luckily, I had written out all my settings, add ons, had a screen shot of how I had the browser set up, and even changes I made to about:config settings. Took a while, but I got it back to what it was, for the most part. The only issue is that my zoom percentage (I use an add on) was usually around 140 for most web sites. Now it's about 130, so 10 less. And the Windows Display sliding setting (Ease of Access - Display) is around 140. That's one setting I didn't write down, but thought it was around 160. I have no idea what happened. One question - on the far right, on the task bar that has the internet address field, there's an icon for Extensions (looks like a puzzle piece). Is there a way to remove it? I did go to Customize, but when I try and grab and drag it off, it doesn't work.