On Friday 17 February 2012 20:22:35 Darrell Anderson wrote:
> As mentioned, what is so challenging as to wait until the GRUB menu appears
> and then selecting the desired option? Further, when the default option
> needs to be changed, then somebody with admin privileges can login and edit
> the menu.lst file.

correct.
in addition, as already noted, there might be other configurations, such as 
usage of LILO instead of grub, or even grub2, which would have to be 
configured by editing /etc/default/grub and then running grub-update.
these would have to be handeled too, for a complete coverage of boot process.
makes no sense to me, for a logout dialog in any DE, IMHO.

werner