Hello ! Is there some speed step like feature (which will allow to downclock the CPU) on Ibook ? If yes, how to use it on Debian ? If no software is available, is there some doc about it (from Apple ?) ? -- printk("Entering UltraSMPenguin Mode...\n"); 2.2.16 /usr/src/linux/arch/sparc64/kernel/smp.c