In plugin version 1.5.9 the stylesheet is not loading on the checkout page, causing problems with checkout.
I was alerted to this by 2 customers. Problem only seems to happen in Google Chrome, and in Internet Explorer (customer does not know which version and sent screenshot displaying the same)
In Safari and on Safari for iPad is working fine.
I observe problem on Chrome for Mac 24.0.1312.57 on 2 machines.
Also, customer account info should really come after credit card info, customers don't understand.
See these screenshots for details - https://www.dropbox.com/sh/d9tpdwpw7wjxl9e/PG27B-wsZl