I have seen this on Debian Linux (slink) as well.
On Mon, Mar 22, 1999 at 12:52:07PM -0800, Russell Van Tassell wrote:
>
> I would appear as if Mutt 0.95.4i will "run away" on a Solaris 2.5.1
> machine if the terminal disappears from it (like a couple of other
> well-known Solaris tools). Instead of receiving the HUP from the
> parent shell, the process gets backgrounded and attached to init where
> it drives the CPU load up (clearly something it probably should not
> do in any case).
>
> Help? Ideas?