On Thu, Jun 30 2011, Lars Magne Ingebrigtsen wrote:

> Do you still see this if you have:
>
> (setq mouse-drag-copy-region t
>       x-select-enable-primary t
>       x-select-enable-clipboard nil)

Just eval'd that, tested and the bug does not change a yotta.

It's easy to reproduce: go in the message's body, do C-SPC, move to
select text, wait 2 seconds, press M-w, go to *scratch*, press C-y:
fails. Press M-y: now it's ok. :)

(If you can find an old message from me about this thread/issue, I did
some digging weeks back and pin-pointed the code line that was the
culprit. But I don't remember it right now.)

-- 
Julien Danjou
❱ http://julien.danjou.info