Okay, I have turned off ubbcode and it is gone. Sorry but I still don't see the purpose of the "Linked Thumbnail". When a person wants to view a particular image, he just clicks on a thumbnail and that will take him to the medium image and if he wants to view a larger image, he clicks on the medium image. What is the purpose of showing links to thumbnails, medium images and large images? And how is it related to ubbcode? Sorry again but I am really ignorant on this aspect.