My friend, if a little cursor jumps all around the words on your screen when you use the arrow keys in Firefox, then you may have caret browsing mode turned on. Don’t panic.

Just hit your F7 key while in Firefox. It’s that simple! What it does is toggles caret browsing mode. When that mode is turned on, using the arrow keys and the pageup/pagedown keys will move the little caret/cursor around the text in the browser window instead of scrolling the page like you probably want.

Yeah, so somehow this mode got toggled for you. In Ubuntu it may be the default, at least for me.

Here’s where I found this answer.

Posted by Greg Pinero (Primary Searcher) as Firefox at 12:37 AM MST

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