Next I searched for a desktop. I spent 6 hours installing gnome-desktop. Upon reboot it showed promise, by showing a desktop screen but ignored the mouse and keyboard. So I rebooted and after the 3rd time I managed to get the mouse and keyboard working. I managed to add a new document to the desktop, but after much searching and experimentation I could not add any apps to the desktop, even they were on the machine.
Knowing that 13.04 was experimental, I decided to install 12.10 again http://elinux.org/BeagleBoardUbuntu#Quantal_12.10_armhf This took a while, as usual. I then installed ubuntu-desktop and this showed the same results as installing it under 13.04
So I made another card with 12.10 http://elinux.org/BeagleBoardUbuntu#Quantal_12.10_armhf and then searched for another desktop. I found one at http://elinux.org/BeagleBoardUbuntu the lxde desktop. /bin/bash /boot/uboot/tools/ubuntu/minimal_lxde_desktop.sh took the whole of the Anaheim v Detroit hockey NHL game to install. It did however end up with a desktop with mouse and keyboard.
I installed wspr without incident, but the big issue was that the screen flickered any time the cpu had to do something AND the cpu usage hit 100% and stayed there. Obviously more work to do!