My primary work machine is an Intel MacBook with 4G RAM, duo core processor, 320G disk.
I had been running all of my jython programs on a slower OpenSuSE11 system, but since I carry the laptop back and forth to work, I wanted to use that more.
I find that on the Linux system jython runs almost as fast as java. On the Mac (BTW, clean build of Snow Leopard) jython runs 1.5 - 2 minutes slower than Java !
(even just to get the version of java vs. jython).

Is anyone else seeing this?