I do not wonder that this story has made the rounds. OS X does do a bit of "optimization" but it is hardly the same as de-fragmenting a disc with Plus Optimizer, et. al. Current disc de-fraggers are so slow with OS X's prolific number of files that it is much faster to do a Retrospect Backup and then do a restore to de-frag a disc. -Joel > For a file system, OSX, that sports a 'myth' > that fragmentation 'isn't an issue'