I recently got a new display for my powerbook (external display). Earlier I connected the display with VGA and used 1152x870 resolution, now I'm using 1280x1024 resolution via DVI. Expose and everything is running smoothly, but the powerbooks fan is running most of the time! I checked with thermograph and the GPU is running about +10°C warmer than before!!! Is about 65°C while surfing and writing! Is this normal?