Different outputs on PC and iPhone

Hi! During the last few days I've realized that I'm getting different rendering outputs of the game when comparing the PC and iPhone versions. More precisely, I'm getting some "pinkish" pixels in the iPhone version that are not present in the PC build (this assets in particular are also used in the PocketPC QVGA version, and I'm not getting "pinkish" pixels there either).
I've prepared two workspaces (one from XCode and the other one from Visual Studio Express 2005) that reproduces my current situation. Although the code and assets are duplicated for each workspace, they are the exact same files. I've renamed the png files to "pnh" so that XCode doesn't reduce its quality before putting them on the application bundle.
Any suggestion about how to solve this would be really appreciated
Thanks in advance for your help!
--Nacho
I've prepared two workspaces (one from XCode and the other one from Visual Studio Express 2005) that reproduces my current situation. Although the code and assets are duplicated for each workspace, they are the exact same files. I've renamed the png files to "pnh" so that XCode doesn't reduce its quality before putting them on the application bundle.
Any suggestion about how to solve this would be really appreciated

Thanks in advance for your help!
--Nacho