skriglitz
Newbie
Don't comment it out (i know thats a linux thing but i dont think it applies in the build.prop maybe) try deleting the line altogether.
used your modified version, deleted, and commented lines and had same problem as mholloway had to reboot for 3g =/
before deleting that line i had to constantly reboot when switching. Now it runs great. *sigh* thought i figured it out for everyone with that issue 

there would be nothing there