This ENGADGET story (overall Technorati Rank for Engadget: 1. Blogs linking to it: 23,499 - ouch.) details the means to disbable security cases. As if it wasn't bad enough that kids pass this knowledge "through the grapevine", a detailed set of links acting as a "how-to" worsens the view for libraries that are currently using this expensive & time consuming technology.
Link to IMM video, which uses no cases as an alternative.
Link to LAT's Intelligent Media Manager product page
To quote the Engadget piece: "Remember kids, exposing weaknesses forces companies to be active about improving the security that should have been stronger in the first place.".....Like installing Intelligent Media Managers, hmmmm?