create a boot-able disk from an iso file

[Boggess Rod]

>As alarming as that article is, and it's a very good read - thank you,
>that hole appears to have been plugged at least as of Maverick and
>Gnome 2.32.

Yea, I read that soon after I sent the article.
(http://www.algorithm-forge.com/techblog/2009/07/executable-application-
launcher/) It appears that the X-bit is being hijacked as a trust bit,
and it's not set by default. The first time you say to trust it, it
marks that bit and never asks again. Here's more discussion on the
topic:

http://lwn.net/Articles/320707/