I can see the pictures if I copy the dropbox links from the missing picture Icon. But they are not showing on the thread.
Check the permissions, or you can use the attach files button to load them.
Just tried entering one of the property links from the dropbox image, And it shows the same missing icon picture. So check the setting at drop box. Or you can try deleting everything after the .jpg and see if they will display when you repost.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit