firefox-x11 question

Hello, I'm trying to get firefox-x11 to run on an intel based macbook. I've got "port install firefox-x11" to work. From an xterm within X11, my problem is now the error message: root# /opt/local/var/db/dports/software/firefox-x11/1.5.0.1_2/opt/local/bin/firefox /opt/local/lib/firefox-1.5.0.1/run-mozilla.sh: line 424: 6785 Illegal instruction "$prog" ${1+"$ <at> "} I saw a few messages about this exact problem on the darwinports mailinglist from last July, but couldn't find a resolution. (I tried Matt Kane's suggestion (changed "/bin/sh" at the top of run-mozilla.sh to "/bin/bash"), but to no avail. Ka'ala Yezbick