USPS stopped working with my sites using 1.3.9b

[chiflatin]

Two of my Zencart sites I have tried to use USPS as well as UPS for shipping. One uses 1.3.8a and the other uses 1.3.9b I haven't installed any patches or fixes on either but the only one that has USPS showing up in the "Estimate Shipping" window is the site using 1.3.8a. This is baffling me since the from what I've been reading the newer version should be the one with no problems and the 1.3.8 site would need the shipping module updated.

the sites are

b u d d s w h o l e s a l e . com (1.3.8a USPS seems to be working)
j j d i g i t a l w o r l d . com (1.3.9b USPS is not working)

Any idea of how i can begin to troubleshoot this?

[haredo]

Please do not double post. Be patient...