On every Time lapse movie I have of the Sun, I get these bits of 'flying objects' zooming across the image.
http://vimeo.com/34189654
Could it be Space junk? It's not birds or insects that;s for sure!. Clear blue sky, no clouds. Skynyx 2-2M camera, Lunt ST80ST1800 scope on iOptron Mini Tower Pro mount.
What do think these 'UFO's are?