Trying to understand the technical aspects a bit. So, at the first trial both experts testified about TA's computer. I recently posted my notes:
So, now Nurmi argues that there are all these porn "hits" or "sites" or something despite both experts testifying there was no porn, no filesharing, no porn hits from internet history. It sounds like these were found in the Registry which is very different from the history. The Registry would store info on all kinds of things including viruses and malware that cause redirection to other websites. So, the registry contains history of non-user directed actions.
I looked for info from 2008. There were a lot of those fake pop-ups back then that said your computer was infected, that you needed an update, etc and if you clicked on it you downloaded the virus. Apparently MySpace was a huge source of virus/malware and TA used it. Info also said Internet Explorer was the worst for malware-not sure which browser he used. It's also common to get malware when you download bundled "freeware" and you're not careful to "uncheck" all the extras it will give you and I believe there was testimony that TA had these types of free security programs.
http://www.nashvillecomputerguru.com/knowledge-base/malware-virus-removal/
So, all of these "hits" were from non-user directed action found in the registry. I don't know how anything found like that could ever be associated with any person as there is no evidence of any affirmative human action and thus could never meet any evidentiary standards I've aware of. And I assume that's why none of this registry "evidence" was ever presented by either expert at the first trial.
CAVEAT: I could be completely wrong about any or all of this as I am not much of a geek-sorry.