So, I have found something that confuses me. Everyone keeps saying that doing a restore removes the jailbreak, making a jailbreak undetectable. That seems to only be partially true. I had 3.1.2 jailbroken and used LockDown-App to protect mail/sms and the like with another, if tiny protection so I could hand out my phone knowing not everyone could read my mail and stuff. However, that eventually also caused me to have to restore and when I realized there's a JB for 3.1.3 (spirit), I decided: What the heck. I restored to 3.1.3 and because my backup was corrupt, had to set up as new. I jailbroke with spirit and haven't installed LockDown again, because it kept crashing on me. Today I SSH'd into my phone and to my surprise, I found remnants of the LockDown App still being there, directories and files. So, unless there's something else I should have done before or while restoring, the simple act of restoring as new does NOT seem to entirely remove all traces of a jailbreak. In theory, Apple could jailbreak allegedly bricked phones and so find traces of previous jailbreaking. Cause for concern?