My computer's gone mad to a point it is hardly usable (though I am somehow writing this now). There are numerous symptoms, including the mouse cursor keeping disappearing and reappearing, window appearance keeping changing (font size, positioning of elements inside the window, the menu bar appearing and disappearing under the title bar - this is for all windows, not for a particular program), slow reaction time (or at least no immediate visible reaction part of the time, perhaps correlated with appearance changes), system not reacting to my keyboard shortcuts and some programs failing to open (including the keyboard layout selector, system monitor and some - though not all - of the system settings). Also, when I type fast sometimes the letters get mangled.
If anyone knows what's causing this and/or what would solve it I'll be very grateful. One clue I have is that running ps I saw dozens (or even hundreds) of instances of
/usr/lib/unity-settings-daemon/usd-locate-pointer. Maybe this holds the key to the mystery?
I'm using Ubuntu 15.10 with Unity.