Data loss or corruption occurs after optimizing with Speed Disk 3.0.
The 9/12/94 issue of MacWeek reports that "Symantec Corp. announced last week that it has found a bug in the Speed Disk module of Norton Utilities for Mac 3.0 that can result in data loss." Speed Disk is a popular hard disk optimization utility among Pro Tools users. Norton Utilities version 3.0 has only been recently released with the inclusion of a new version of Speed Disk. If you have upgraded to 3.0, cease using Speed Disk immediately to prevent possible data loss. MacWeek also reports that (according to Symantec) less than 1 percent of users reported data loss and that all shipments of Norton Utilities for the Mac 3.0 have been halted. Updates will be mailed to registered users and will be available from online services. No date for the new release has been announced. Symantec may be reached at 503/334-6054 or 800/441-7234.