jQuery 1.3.1 distribution
jQuery (jquery.com) no longer provide a “packed” version (run through Dean Edwards’ Packer with Base62 encoding turned on)/ The main reason is that packed scripts are slower for the user than what you would get from using just minification. This may seem counter-intuitive since a packed script’s file size is smaller than a minified script but the final load time ends up being much higher (due to the decompression step it must go through). The minifed copy of jQuery that run through the YUI Compressor, should be the optimal form of jQuery to use in a production environment (served using gzipping, if possible).