Thanks for that workaround suggestion. I didn't look into the problem because I only kept LXDE on my hdd for about a day. Not being overly impressed, I uninstalled all the programs the 'groupinstall LXDE' brought in. However, I did notice in the grub menu session selector, while LXDE was onboard, that there were also choices for openbox-gnome and openbox. That tweaked my curiosity.
I installed just openbox, and have been having a blast creating a whole new desktop ever since. Haven't booted back into XFCE since doing so either.