I'm am using ASP.NET MVC to create a page that posts to the Paypal sandbox. My form that posts to the Paypal site is nested inside a parent form. I am using Internet Explorer 7, and for some reason, the nested form posts to my local machine instead of the paypal site. If I add a copy of the same nested form directly after the first, the first one posts to localhost, and the second posts to where it is expected.
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>
</title>
</head>
<body>
<form name="aspnetForm" method="post" action="" id="aspnetForm">
<!--First form posts locally-->
<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">
<input type="submit" value="Pay"/>
</form>
<!--Second identical form posts to the expected destination-->
<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">
<input type="submit" value="Pay"/>
</form>
</form>