I came across this story in ALA Direct today -
http://www.lohud.com/article/2009910300341 - Library board mulls privacy issues in police investigation - "State police say they have pulled the plug on an investigation into the possible viewing of child pornography by a patron of Hendrick Hudson Free Library because the library board refuses to cooperate with them." The library board, however, says they are "...looking for some additional information to evaluate the situation and then make a decision."