ChangeLog unity webplayer 3.4.2f3

Hi, We are working on a game and since the last webplayer version is released, we experience a problem with shaders on mac config. Does anyone knows what really changed about webplayer on mac config on the last release and how to solve it quickly?

On mac configs, either the player crashes before the game is launch or all the shaders become black and it's like somebody put the lights off..

Thanks.