PerfectDisk Updated August 15, 2011, 18:35(EDT) By Eric (a.k.a. TweakHound) PD12 has been updated to build 285. Update from within the program (Help > Check for updates). See their blog post for more info: PerfectDisk 12 Service Pack 2 (Build 285) defrag update. If you aren’t using it, you should be!