I own a Mac Book Pro which is only about 5 months old. A week ago some strange "stains" appeared at the bottom of my screen. It's not dirt as it can't be cleaned...looks like it's inside the screen. I can't show you what the stains look like, but it's some light greyish dots and "splatters" or patches...... similar to as if water has seeped in. But i haven't spilled anything on my MBP at all. I have cleaned my screen with a damp cloth before but it's not like dripping wet or anything, and i always dry it immediately with another piece of dry cloth. Does anyone have any idea what the stains are??