This is off-topic, but I know there's some clever people out there, so I hope somebody can help.
After many years on PCs, I've just got a job on a Mac. So far so good, until a couple of hours ago. I don't know what happened, but now every dialog box has a visible black box around the focused button:
Not just in Photoshop, but everywhere - all the programs plus the Finder. If I tab, the box moves around, or disappears, or appears in some random part of the window.
When I went to restart, I noticed this:
Why are there two of me??
Needless to say, restarting didn't work.
Any ideas?



