Opinions needed

[supersy8]

My girlfriend recently bought a Canon Power Shot AS90is 8 MGpixel.

She had the camera on the "night shot option" and took these photos.

She's trying to tell me that the strange lights and orbs on the shot (which could not be seen by the naked eye) are "indenties". She fancy's the thought of having ghosts around her but I have argued to no avail that it's just the light from streetlamps or something playing tricks on the camera.

I'm know expert but I would like some kind of expert opinion on what these are. Has anyone here had their pictures come out like these?