So I've had a Bianchi Giro (aluminum) for nearly three years now, and I think I'm seeing the beginings of some serious cracks. It's all occuring at the front of the bike on the top, head, and down tube.At first I thought they were just scratches on the paint but that's probably too unlikely. I'd take pictures but my mom took the camera with her to mexico. Is there anything I can do to stop this, and is it still safe at this point to ride it? Three years (and not very vigorous riding as compared to many other riders) seems a little too early for a frame like that to be going out. Thanks for your help.