Symantec has released a free 4.0.3 updater for Norton Utilities for Macintosh. Changes in 4.0.3 include only the use of Mac OS 8.5.1 on the bootable CD for new purchasers and a minor fix for UnErase. Version 4.0.2, for which there was no online update, had more extensive changes and fixes to 4.0.1, including a number of general items like "Disk Doctor 4.0.2 includes enhancements that improve repair capabilities and reduce instances of unrepairable errors," along with more specific fixes and changes to less-important modules like DiskLight and WipeInfo. Since the full 4.0.3 update is quite large at 11.9 MB, Symantec has posted incremental updates. Although it's good to see Symantec updating Norton Utilities 4.0, that release did significant damage to the disk repair utility's reputation (see "Norton Utilities 4.0 Problem Reports Abound" in TidBITS 451). We can recommend only that you proceed with caution and make sure you have a good backup before using any version of Norton Utilities 4.0.