I had plugged in my phone via USB (as a mass memory device), after which Nautilus and Miro crashed. I was trying to send a report from Miro when this occurred. Other GUI apps running at the time were Synaptic, Chromium and Transmission.

There are lots of reports with this title already, but they are all from pre-11.10 era, and I believe there’s a bot that’ll tell me if this is a duplicate so no harm done if it is.