For the Firefox issue try this! This is only a small snippet of the code being modified!
Instead of checkout.tpl like this:
Code:
<INPUT type="hidden" name="action" value="place_order">
<TR><TD>
<PRE>
<FONT>
{include file="customer/main/customer_details.tpl"}
</FONT>
</PRE>
<P>
{if $ignore_payment_method_selection eq ""}
Change it to:
Code:
<INPUT type="hidden" name="action" value="place_order">
{include file="customer/main/sexy_customer_details.tpl"}
<TR><TD>
{if $ignore_payment_method_selection eq ""}
On a side note: Holy Carp! I never realized how <table> redundant x-cart is.