FourthAmendment.com points to a suppression ruling out of EDNY:
The government seized 61 hard drives to copy and copied four others then took it’s time analyzing them. The court finds the delay was unreasonable and was a “flagrant disregard” of the rights of the owner of the computers and target of the search and suppresses. United States v. Metter, 2011 U.S. Dist. LEXIS 155130 (E.D. N.Y. May 17, 2011) [apparently should be a 2012 citation]
Read the excerpt from the decision on FourthAmendment.com.