When it detected noscript, it replaced the page with this:

    <meta http-equiv="refresh" content="0">AAAA.........

...as displayed with ^U, except the "AAAA...." wasn't visible until I pasted it in this text box. I'm not sure, but I suspect the length of the AAAAs was growing rapidly. There's a lot of memory and more than one core on this system, so I think I killed the tab, which appeared only as a blank page, before it became too destructive.