I live in a new construction, built in 2006. today, I saw this in my backyard: http://img227.imageshack.us/my.php?image=img00190hg0.jpg http://img134.imageshack.us/my.php?image=img00191co7.jpg http://img134.imageshack.us/my.php?image=img00192ny5.jpg this is kind of scaring me. I touched the corner and the piece is kind of loose. Looks like I can probably pull that piece out. 1. is this bad? 2. is this something urgent that needs to be fixed? 3. how do I fix it? can I just patch it up with cement?