for awhile now i've been reading up on the thermal grease threads and thinking that was the problem with my mbp being really hot. then i started looking into the fans. for awhile i wouldnt hear anything at all. all the programs i have running such as istat and smcfancontroll shows there are no fans running. i just did the pram and smc reset and now i can sorta hear the left fan running. nothing on the right fan. it still shows no fans running on the two programs. do i have some type of bad sensor or something. seems like i might have to open it up to fix one of the fans but i cant really tell if its the fans thats busted or its the sensor. any help is appreciated.