States Field Not Working For USA

Original Joomla version: 1.6
Current Joomla version: 1.6
Original Hikashop version: 1.4.9
Current Hikashop version: 1.5.0
Site: beautyofherbs.co.cc/
Page with problem: beautyofherbs.co.cc/index.php/my-account/address
Browsers tested in: IE, Fx, Chrome, MxT, Op, Sf

Problem: When customers choose USA as their country when adding an address, the states dropdown box disappears, not allowing them to choose a state. I have checked the database, and the states are in there, but are now showing up on the page.

Fixes I have tried so far:
* updated from 1.4.9 to 1.5.0
* manually removed and ran the United States zones query from phpMyAdmin to re-include
* tested in different browsers

I just tried on your website and it's working fine for me. Did you change something since you posted ?

Oh wow, it is working for me now too.
No, I have not done anything else since I last posted.

Maybe one of my fixes from above had a delayed response?

Maybe a cache issue ?