Since yesterday whenever I click on any text or hover over certain links this annoying text marker thingy pops up. You know that line that symbolizes where your next letter is going to pop up when writing texts such as this one (example: [http://imageshack.us/photo/my-images/842/examplecp.png/ How it's supposed to be] ), but while it's helpful while writing text, it's just plain annoying while trying to read text and that line is somewhere on your screen, "flashing" on and off. Examples of how it's appearing: [http://imageshack.us/photo/my-images/839/annoyingv.png/ Example 1] [http://imageshack.us/photo/my-images/46/annoying2k.png/ Example 2] [http://imageshack.us/photo/my-images/822/annoying3.png/ Example 3] Do anyone have any idea what's causing this or how I can fix it? I've tried reinstalling Firefox and obviously restarting my computer.