Recently, I've observed that... 1) The 4 corners of the screen are dimmer / darker than the rest of the screen. Is this normal? 2) There's a purplish-white messy image on a black background appearing for a second each time the computer starts up. This is seen just before the "Starting Mac OS X" blue screen appear. I haven't seen this before, but now it appears at every start-up without fail. 3) After the "Starting Mac OS X" blue screen, the desktop will appear. Initially, the display colour would be slightly faded and has a blue-ish tone. About 1 second later, the display switches to the normal display colour (vivid and bright). This also happens at every start-up. From this (Faded, Blue-ish tone) To this (normal, vivid colour) This PowerBook is 2 years and 3 months old and it has been subject to light use only (still under AppleCare). It has NVIDIA GeForce4 MX graphics card with 64MB VRAM. I am certain these issues were not observed before and they happen only recently. To illustrate what i mean, please look at this Quicktime movie (~10MB size) taken on a normal start-up Questions: are these issues common among PowerBooks? Or are they showing signs that the computer's display might malfunction in the near future? Will the problems get worse with time? Are there PowerBook users out there who also experience the same problem?