I was just expanding an archive (.sitx) using StuffitExpander 10, and it showed: Time Remaining: 2 023 406 814 hours. Now 2 billion hours is close to 250 million years. Where could OSX or Stuffit have derived this estimate from ?? The expansion actually took about 1 minute (22 Mb). Just thought I would share with you folks for amusement value ! TREVOR