On my vacation to Egypt this summer, I noticed black spots appearing in my pictures in the top left hand corner. I took off the lens (at home, in a non-dusty place) and took a look inside but I couldn't see where the spots are on that mirror-like thing. (sorry for my ignorance). Should I take the camera to be cleaned or is there a home remedy to clean. Here are two sample shots: http://www.box.net/shared/pg6yqf6qz3 <-- sometimes the dots are very obvious, like in this picture http://www.box.net/shared/ach35nckzz <-- and sometimes they are more subtle, like in this picture...i think it varies by amount of lighting Thanks for taking the time to help me with this.