It seems like a recent update to the kernel has changed the behaviour of the system sensors module. My laptop now constantly shows as being 10 degrees or so hotter than usual, which is causing the fan to run nearly constantly. However, when I boot into the lts kernel this behaviour magically goes away and the fan is nice and quiet. One other possibly relevant point: in addition to the "sensors" command showing higher temperature values under the main kernel, the format of the sensors output is completely different between the main kernel and lt. Anyone have any idea what might be going on here? Sensors output is pasted below. Thanks, DR --- sensors output main kernel: Adapter: Virtual device temp1: +72.0°C (crit = +97.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +72.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +68.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +70.0°C (high = +86.0°C, crit = +100.0°C) --- sensors output lts kernel: acpitz-virtual-0 Adapter: Virtual device temp1: +61.0°C (crit = +97.0°C)