I'm running the Nightly 64-bit build on Windows 7. Two or three nights ago one of the updates came down the pipes and my arrow keys stopped working correctly. When typing in either a url or search if you try to scroll through it will only hit the top and bottom (and hitting down responds like I've hit the up) I've checked caret browsing and disabled all addons to test and still no luck. In the search area I've noticed it only hits 1/3 of the suggestions. Why is this happening? I've had to resort to typing out the full url and search or using the mouse which is sometimes annoying given I used to just hit one down arrow and press enter no need to move my right hand from the keyboard at all.