If the cybersource payment page freezes up, your application will still be submitted even if you have not payed the fee yet. Just remember to go back in 2-3 days to pay the fee.
@thejappster That is useful info for a lot of people. They would feel even better if you could point to source.
@FarWestCoast I called the UC Representative to make sure. Wait time took 1 hour though 