Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live CD. The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and the terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as default). In fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was better. Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature. I am also aware that this particular model is notorious for heating problems, and there are suggestions for cutting case for better air flow. However, i do not want to try this solution, but the temperature control by rhel gave me some hope! Posibly i am wrong. If anyone has a suggestion, or needs more information, pl. let me know. Thanks! Krishnan