Hello Alessio > Redhat ES 4 kernel 2.6.9-34.Elsmp, > Mother board ASUS p5gd2 (bios 1006) with P4 at 3.4Ghz. > Sensors: sensors version 2.8.7 with libsensors version 2.8.7 Too old version, you have 83627EHF imho. Please try new version 2.9.1/2 should be OK > i2c /dev entries driver > CPU0: Temperature above threshold > CPU1: Temperature above threshold > CPU1: Running in modulated clock mode > CPU0: Running in modulated clock mode > CPU1: Temperature above threshold > CPU0: Temperature above threshold > CPU0: Running in modulated clock mode > CPU1: Running in modulated clock mode This is done idependetely from hardware and it means that both CPUs overheat, please check the heatsinks and/or check the thermal conducting grease between heatsink and processor. Check fans too. > 1) Sensor/chipset not recognised. Old version > 2) Messages about cpu temperature See above ;) Regards Rudolf