FW Fan is LOUD

Well recently on my 1 month old Sony FW390 i have been hearing very loud fan noises. I havent really payed attention to them but im pretty sure they have been like this since i got it. What is happening is whenever im downloading like a torrent the fan gets extremely loud and stays that way until the download is done. Also when im converting a video ive noticed it does it also. Now when im just surfing the web the fan is moderate and fine. I have heard of some programs to control the fans etc. but none work with vista 64 bit. I have my laptop on a wooden desk if that matters, the laptop is basically brand new and dust is not an issue. The fan acts normal when im playing games, every about 5mins it turns on for about 3 mins at full speed which is typical. But i dont think its typical for it to be full speed the hole time when im downloading something. So what im asking is there a way i can control this? I like to leave my laptop on at night to download stuff, i have the setting on just dim display. I really want to continue to leave it on at night but it just gets so loud and its ridiculous. So basically is there a way to control this? does vista have some option to turn off all the background programs and not use as much CPU but continue to download the things being downloaded? Or do u think its a hardware problem?

Thanks