on my MBP, whenever i want to sleep it, it takes a good 15-20 seconds for it to completely go into sleep mode. the screen goes black instantly, but the hard drive and fans keep on spinning for an other 20 sec. and also when i want to shut it down, it take about 30 sec for it to turn off. it stays on my background with that little spinning wheel at the bottom for a while before it shuts off. i never experienced this with tiger. does anyone else experience this?