[answered] Red X's

I feel kinda silly for asking this question, because I know SOME of the reasons it may happen but-

In my thread, wich is loaded with pictures, the first few pages are nothing but red x's.

Now, I know that, if you use ...lets say for example.. Flicker to host a picture on, and YOU delete that picture from Flickr , where ever that picture was posted it will be removed and a red X in its place.

I have not removed any of those pictures.
In fact I have used image shack the whole time.

What have I done wrong?
Is there a limit on how many pictures i can post in a thread? ( I doubt it , but Im pulling for something here)

Did I post pictures that were too big?

This is really bothering me as I have put alot of effort into that thread and the pictures... so .. that is the reason for the silly'ish question..