if anyone needed proof that using setcpu to clock down while the screen is off saves battery, here it is for you... i just flashed king #3 last night. right before going to bed, i turned the phone off and charged til the led went green. then i wiped the battery stats, took it off the charger, and went to bed (so obviously, i was at 100% battery). this was at a little after 3:30am (3:37am is what battery indicator told me)... woke up this morning around 11am, maybe a little after. battery remaining: 96%. ...and i'm not even clocking it down as far as ChiTownJim. my screen off profile is set at 499 max.