OK #1 - one of my laptops is named momo too.
how funny.
It looks like the problem is because you have Barry installed, and something in the setup and the 7730 interaction is causing the bcharge tool to keep running over and over and over again, resetting the USB port. At least, that's what it looks like from here right now...
What happens if you uninstall all of the barry tools so that no udev rules run, there's no bcharge, etc.? Does the exact same thing happen, or do we get different results? (working or not)
Also try looking in /var/log/dmesg -- certain module dump messages end up in there and not in /var/log/messages, there might be some more logging info that'll help us.