I measured idle battery life at 250HZ, which is what my SL10.1-beta8 laptop has as the default. I compiled the distro kernel with HZ=1000 and battery life got worse -- no surpose. But then I built with HZ=100 and it was the same results as HZ=1000, when I expected it to be better than HZ=250. clues? -Len ps. yes, I'm running at init5. I'll repeat at init1. - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html