Ok after hours of testing i was about to give up, i tried every setting and resolution under the sun, i tried on ATI Intel and Nvidia then just when i was about to report back i saw a little messy texture in one of the puddles. I got closer and it vanished, so i walked around the puddle angling my camera and it came back again, eventually i figured out i needed to be facing north east and angling my camera down at about 30 degrees from the road to see it. If i looked at it from anyother angle or side it just looked like a normal puddle reflecting the buildings behind it.
Anyway i tested again on all the different resolutions and graphics settings and it showed on all of them, also on ATI, Nvidia and Intel graphics cards so im guessing its just a graphics glitch and its perfectly normal so i wouldnt worry about it. Just try to keep your camera out of that angle and if one appears just walk around the other side of the puddle and it will go away.