I was happily using my favourite IDE to edit my source code, and then it froze for a while which upset me. After a while elapsed, it prompted me to download something and I thought to myself, "okay - it must have sensed a new version of <whatever> and has rudely but hopefully not to be repeated, trying to update itself". So I said, "what the hell", and proceeded to download and install it.
Now after what must have been a few minutes of resumption, the editor's playing up and has become unresponsive. Any clues?