cart checkout prob using IE9

When clicking on the register button or the login button when using IE9 am unable to advance thru the checkout workflow. Page refresh's to the same login/register page with no "next" button.

Tested in Firefox, Chrome and Safari with no problems.

p.s. I also have to click the "next" button twice to advance to my payment gateway (Paypal)

Hikashop ver 1.5.7
PHP ver 5.3.13
mysql ver 5.1.61

Can you give a link to your website ?
Do you have the same problem on our demo website ?

seems to have self-resolved itself, must have been a temp glitch in IE9. Made sure and also tested on your demo website using IE9.

But I still have to click the "next" button twice to advance to my payment gateway

My Checkout workflow is: cart_coupon_login_address_payment_shipping_confirm,end

For the next button, it's probably because either the "Auto select default shipping and payment methods" or the "Auto submit shipping and payment methods selection" options of the Checkout tab of the configuration which you turned off.
Make sure that they are on.

Both options are set to yes(on)

Can you give a link to your shop ?

here is the link www.slllc.org/site/our-store

I just tried on my end and didn't had to click twice on next in the checkout on your website.
You found the solution ?
Or do you still have the problem on your end ? If so, we cannot reproduce it. Could you try with another computer then ?