I emailed the maemo users list, and received the following reply. I am not sure why they don't put it in the garage...

> Josh Smith wrote:
> > Where has the install file for mnotify gone? It is not in the
> > repository anymore.
> >
> > cheers-
> > josh
> It's still listed in Tableteer, so this looks like a ballsup rather than intentional.
>
> Can anyone at Nokia pass the message along and restore mnotify?
>
I have removed mnotify from the repo following the request of its
developers. The sw had some bugs and afaik they are working on the
fixes. I do not know when the new release will be available, so please
don't ask it

Regards,
ferenc