With this small code IE7 seems to go in a endless loop.
Is this new?
<HTML>
<iframe src src=a onload= this.src='http://127.0.0.1';this.onload=function()
{};>
<iframe src src=a onload= this.src='http://127.0.0.1';this.onload=function()
{};>
<iframe src src=a onload= this.src='http://127.0.0.1';this.onload=function()
{};>
</HTML>