The spots on your photos are called "Dust Halos".. which are caused by the camera's flash on dust particles.. the following detail is from the 'Digicam Help' website. The spotting problem happens indoors and outdoors at nite when the flash is used... mostly a problem with small cameras where the flash is located close to the lens...

===Dust halos

Don't get spooked by white, ghost-looking round spots that can appear in inside flash photos. They are caused by dust.

Dust particles floating in the air when taking flash photos with a digital camera may be captured in pictures. Often referred to as dust halos, the particles are randomly spaced throughout an image. There may be just a couple of spots, or the problem can be so bad that you hardly see the picture.

Compact cameras are particularly prone to dust halos because the flash is so close to the lens. The light from the flash catches the dust and bounces back into the lens.

See more info on the website..... ===