as for the cursor being behind the X, heres a quick fix that works for me, right click and choose desktop properties, then click the settings tab, change the screen resolution and let it change, when the box pops up to ask if you want to keep those settings click no and let it revert back to the original resolution, that should fix it, if not you may have to do this a couple of times but it always works for me and sure beats having to reboot each time it happens. Good luck 
