Kangaroo Kourt? Or Just Klumsy Kops?
At best, this sounds like a case of incredibly inept law enforcement officials who allowed evidence to be manipulated and damaged. At worst, they're railroading this guy.

News.Com: Electronic evidence anchors porn case. A Rochester, N.Y., federal judge on Thursday sentenced a former Xerox engineer accused of trafficking in child pornography to nearly four years in prison. The government's prosecution of Larry Benedict, 45, is unusual because all the evidence in the case is electronic, and all of the evidence appears to have been allegedly tampered with or otherwise altered after it was in government custody. [Tomalak's Realm] 

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