[masraum]

Originally Posted by porwolf

You may have polarized glasses built for watching 3-D movies on screens. One glass is then polarized vertically and the other horizontally. The light from your screen may be polarized also in primarily vertical or horizontal direction. In that case you would see the screen bright through one lense but dark through the other.

That's what's happening. What you have there is a crappy set of glasses. If you look at a computer screen or pretty much any LCD, ipod, ipad, etc.... and tilt you head side to side, you'll notice that the screens will shift back and forth from dark to light. I've had several pairs of polarized sunglasses and they've always had both sides in sync with each other which is how it should be. Yours are out of sync.