Quote Originally Posted by Sketchy
Nice template.

As you suspected, in IE, there is a visual problem on login/signup. One immediate parsing error showed up;
Code:
div.order_steps {       /* Is needed for the centering in IE */
    width: 100%;
    padding: 0px;
    margin: 0px;
    margin-top: 10px;
    text-align: center;
}
Add the semicolon(in red).

Being part of the login and something specific for IE, maybe that's to blame.
Thanks for finding that error. Though that is not included in the template. The order steps is something I added for myself. Same with the split login. I added the split login mod, which has nothing to do with this template.