On a related note, this is a forensic analysis that one of the Tor Project developers did, to see what kinds of traces the browser bundle leaves behind on a Windows system: http://dkn255hz262ypmii.onion/index.php?topic=148291.msg1152452#msg1152452 What it means is that if you deleted TBB from your computer, even if LE didn't analyze the free space for deleted files, they could find evidence that it existed. However, they wouldn't find evidence of what you were browsing. In OP's case it doesn't matter (I just thought it was useful related information), he had TBB on his computer and a link to SR. But if you want to absolutely hide your Tor use, you must extract the browser bundle on an encrypted volume, preferably a thumb drive that can be disposed of easily.