In case you hadn't noticed: Cygwin version: Zip 2.3 (November 29th 1999) UnZip 5.50 of 17 February 2002 on http://www.info-zip.org/pub/infozip/Info-ZIP.html Zip 2.31, released 11 March 2005 UnZip 5.52, released 27 February 2005