I was looking through some images and came across this one. Once again...2...TWO..UFO's are seen in the image. These are small images and low quality, despite the rover having top of the range cameras on board...sounds fishy to me.
The ufo seen on the right of the screen appears to be dropping a shadow below onto the terrain.
Hopefully in the coming days NASA release these high res images, though they will probably be heavily edited by the time we can get them.