When I click the downloads button in the top right hand corner of the screen, the downloads box does not appear. However, moving my cursor over where it should be changes the cursor, and clicking opens a recently downloaded document - it's like it's invisible. Opening the downloads managed via the menu still works. Also, clicking the scroll wheel on my mouse doesn't change the cursor to the small arrow which allows you to scroll around a point - but moving the mouse does scroll the page. Again, as if the graphic is invisible. I noticed this yesterday, but can't think of anything on my computer that I changed. I've tried disabling all add-ons, and resetting firefox as per the troubleshooting recommendation, but it didn't work. It's a minor annoyance, but could anyone help? Thanks! Also, the "automatically add" troubleshooting button on this 'Ask a Question' page doesn't seem to display anything - possibly the same problem?