IBM X60 subbie, runs kally
 

Well, my latest build was an IBM X60 (Centrino Vpro) with core duo 1.6, 1gig ram, 80 gig SATA. Put Kalaway on board (10.5.2 release). Didn't even bat an eyelid, with a smooth, simple install, no crashes and a reboot I was straight into setup. Pretty damn stable build and no crashes as of yet (5 hours on a plane). Battery life is pretty damn amazing (no recharge yet!)