diff mode weirdness

[joakim]

I wanted to look at a diff file, and it opened nicely in diff mode, with
font-lock etc. Then I had some issues:

- diff mode repeatedly asks me where the diff source is. In this case I
  only had the diff, not the source. This was very annoying.
- after a while the diff buffer was automatically killed, to my
  surprise.

Do others experience the same problems? If so I can find out more
information.



-- 
Joakim Verona