I'm used to my old PC notebook (a beast of a P4) sucking in a lot of dust and blocking off the heatsink after about 6 months of usage. I would just open the sucker up, remove a few panels and go at it with some compressed air. No problem. I have had my current PB for 13 months now and I am noticing signs of possible blockage. Noticeably, the fan is running much more often and seems to be blowing out less air. I know the dissassembly process for the 12" PB is no cake walk and I'm not afraid to do it, but I am wondering if anyone has any suggestions. Basically, if I don't have to risk the integrity of the system by opening it, I don't want to. Thanks!