well either you ahve a high rpm HD or your HD is getting old and louder.. just make sure it doesn't start doing the click of death loop.. thats the worst. I have a long story about that but i wont get into it..
I purchased this notebook from http://www.cyberpowersystem.com a year ago
it's a Uniwill 258kao aka Fujistu Seimens Amilo A-1630
CPU: AMD Athlon 64 3200+
Display: 15.4' widescreen WXGA TFT LCD Display max:1280x800...
The plastic on these notebooks is terrible, my Uniwill 258kaO based on the ferrari series has hairlin cracks all over.. very frustrating.. I may sand mine down and epoxy it then repaint it with a thick paint to keep it from cracking