I made these changes, and it still only works over WIFI. 3G never works, and only 1/20 of the time is another wireless network fast enough for it to work. Also, it appears that the xfce4 startup time is too long for the script to work, so only lxde works when anything works.

When it does not work, I am stating that NX does not enter fullscreen mode, and I cannot enter any text into NX (it just goes to the terminal instead).