Camera Problem- Color Vignette

[MegaBit]

This is a bit strange. When viewing on the iPhone 3G screen the image appears just fine. However, after capturing it and looking at them (on iPhone or downloaded to computer) they have distinctive color vignettes in the corners- always the same no matter what scene and it tracks the orientation (portrait or landscape). It seems like post-capture software and not the camera itself.

Anyone else see this on theirs?

Examples:

 

[razorianfly]

I took a few shots yesterday, just to test the camera out, and I can't say I'm seeing this problem;

R-Fly