Hi there. I'm having a bit of an issue with my white MacBook, it's a 2.4 Ghz Intel Core 2 Duo with 2GB 667 Mhz DDR2 SDRAM. I just updated with Software Update, i'm running 10.5.8. For some reason, the fan has been coming on a lot, practically all the time. This didn't use to happen nearly as much; I'd have to have it right on my lap for a while, or of course on a hot day it would, but it's gotten colder in the last few weeks so i assume it's some kind of issue... maybe hard drive maintenance? I'm open to any suggestions to resolve this. Thank you in advance.