Fresh Until: 1/16/2008 16:16:15
Current Age: 0
Freshness Lifetime: 9/26/1972 17:00:00
Is Fresh: 1

I've added this to the request:
$request->header("Pragma" => "no-cache");
$request->header("Cache-control" => "no-cache");

I even tried: 
$request->header("Cache-control" => "max-age=-1");