The Motorola Atrix 4G 4.1.83 update unfortunately broke the functionality of some banking applications with is fresh certificates it brought, along with the fixes that improved data connection stability and speed.
It looks like Motorola has baked up a fix for all those that want to manage their finances while on the go, using their Atrix 4G. The Atrix Certificate Updater is up in the Marketplace and it should fix your issues with the banking applications. If, for some reason, after applying the update, you want to revert just run the application again. You need to have an Atrix 4G with update 4.1.83 applied in order for the fix to work.