Great contribution, i recently installed it and it works much better than the version i had for my 1.3.5 zen...now i have 1.3.7 zen it works great in IE but does not work in Firefox at all, it sits there trying to load the page when you click on the usps button. I do most of my work in firefox so it would be nice for it to completely work in there.

Problems that have also occured from previous 1.3.5 version and new usps version. When a customer uses GoogleCheckout it automatically fills in their country to Australia and then when i go through the rest it's all filled in properly, city/state/zip etc. then i go to change it to US for the country and it removes the state and Zip in the USPS part.

Any way to fix this? I use google checkout for half of my orders so it sure would be nice just to click n ship without having to go research the state/zip again.