Here's the latest word on the upcoming OS X-native versions of Alsoft's DiskWarrior and PlusOptimizer (from Alsoft customer service): The new version of DiskWarrior (v. 3.0) will be available around mid-February. The new version of PlusOptimizer will not be ready for another month or two after that (they weren't able to specify). If your computer ONLY has OS X on it, you won't be able to run the current versions unless you installed OS 9 drivers when you installed OS X, so you'll have to wait until both new versions are available (unless you want to reinitialize your disk and install OS 9 drivers while reinstalling OS X).