Basically what it says in the title. If a guest chooses to register during the one-page checkout, when he clicks the final purchase button he gets redirected to an empty cart page instead of the success page ONLY when using Chrome. Everything works fine in Firefox and IE.
The purchase and the registration are still successful though, both the registration E-Mail and the purchase E-Mail are being sent.
<input type="hidden" name="form_key" value="<?php echo Mage::getSingleton('core/session')->getFormKey() ?>" />
below the opening<div class="fieldset">
tag inpersistent/customer/form/register.phtml
var/log/system.log
&var/log/exception.log
if there is anything that relates in there please update your question with the entry.