This output... Script started on Wed 04 May 2005 10:15:00 AM EDT lecserver$ du -s tz*/tmp/*/zoneinfo 489 tz/tmp/etc/zoneinfo 1709 tzexp/tmp/etc/zoneinfo lecserver$ exit script done on Wed 04 May 2005 10:15:08 AM EDT ...indicates that "old-format" data eats up about half a megabyte of disk space total while "new-format" data eats up about 2 megabytes. (Some individual files grow by a factor of 9; others don't grow at all; the final result lies between these extremes.) At a dollar per gigabyte of disk space, the old stuff costs one twentieth of a cent per computer while the new stuff costs four twentieths of a cent per computer, for a difference of three twentieths of a cent. Making a wild estimate of one computer per person, there are about 6.5 billion computers in the world. In this case I'm happy if 90% are running Windows, since Microsoft doesn't ship time zone files. That leaves at most 650 million computers where the time zone files might show up. Maximum total cost: 650 million computers * three twentieths of a cent: $975,000 (ulp!) Frightening corollary: 1024 bytes of Microsoft code bloat costs the world economy $5850. --ado