Strange problem I ran into. Using UPS XML module. I have an an address called in from a customer that does not work. Comes up with blank screen. I tried logging in separate account and tried anther address from austrailia in a different city to see if it worked and it did. Then I tried changing just the address to some not even close address and left zip city and such alone. Then got the blank screen. Then changed it back and tried checkout. Still blank screen. Then I went from firefox to IE and logged in. then tried with same shipping address that I fixed and it is fine. So I changed the address once more in IE and again blank screen. CHanged back and same thing. Changing back to a good address does not work. So is there something built into the browsers that is holding it up from refreshing. I tried refreshing every page before going to checkout and it did no good.