Well, I can confirm that this fix works. still need to downgrade Adriane-x to version 1.4 to get the Firefox option in the graphical programs submenu, but at least that down't require adding Debian oldstable to one's sources.list. Naturally, this fix needs to be made known to Claus Knopper in hopes that it can be implemented in the public release of 7.3 and the Firefox option readded in the newer version of adriane-x.