Hey, i have a sony vaio F series laptop that has been fairly loud since i've had it. Recently i took it apart and replaced the thermal paste which made literally no difference to the temperatures (therefore fan speed). The fan usually runs at 4200RPM and the CPU is always round 60c, GPU is 60c and PCH is 66c or so. These are obviously high temperatures. So what am i doing?... browsing web pages, editing word docs, not really much. its basically the same performance as playing games. Having pulled the laptop apart i noticed where the AC cord is plugged into, the screw hole was ripped apart (the snapped of part wasn't even in the lappy) so i found that a bit strange, infact i couldnt even screw the screw to hold it (and some other line, perhaps ground) down. I think the cooling unit sony uses with this model must be insufficient, and can't cool properly - but I'm really not sure at the moment.