Update your DiskWarrior startup CD.
Can repair Time Machine backups.
DiskWarrior and Leopard: be careful
What kind of compatibility issues?
Wait until official word from developers is released after Leopard's shipment.
DiskWarrior 4.0: Some Mac OS X 10.4.x disk directories cannot be rebuilt from Mac OS X 10.3.x
DiskWarrior 4.0 arriving in users' hands
DiskWarrior 4.0 released: Intel-based Mac compatibility
DiskWarrior conflict with QuickTime still not resolved
DiskWarrior 3.0.x: Problems with FireWire 800 and SATA 150 or faster drives; Update: QuickTime 7.0.4 implicated