Upgrade magento 1.7 to 1.8 the accordion of the checkout page step 5 payment information doesn’t work anymore

Since I have upgrade magento 1.7 to 1.8 the accordion of the checkout page doesn’t work anymore whatever the theme I choose. I tried to fix the problem, no success. What can I do to fix it ?

I finaly found the problem. Go to “/app/design/frontend/base/default/template/checkout/onepage/payment.phtm” open it, line 36, and change :

<fieldset>
        <?php echo $this->getChildHtml('methods') ?></fieldset>

To :

<fieldset id="checkout-payment-method-load">
        <?php echo $this->getChildHtml('methods') ?></fieldset>
Works great for me its been bugging me for a few days trying to sort it out.