I realize this is not a critical thing but the fact that I cannot figure it out is quite annoying. I am finding it very frustrating to say the least because of the intermittent nature. That said, mostly the images are not displayed. The thumbnails for the FB user are always displayed to add to the puzzle. I have tried searching and I cannot find anything to explain it. The closest thing I found was to ensure the browser downloads images but that does not make sense because it only happens on FB.
So I have a Mac and a PC. It is not occurring on the PC. It is happening on the MacBook Pro Lion. It happens on Google Chrome and Safari. Yesterday I was on the school wireless. All images displayed perfectly. When I came back home initially the images were perfectly. After a restart the images were no longer displayed. It is not happening on any other web pages.
I have done a complete dump of cache with no effect.
So I think I have found the cause, I reinstalled my recently returned router. My old dlink is 2.4ghz. The netgear has 2.4 and 5 ghz. The Mac is now on the 5ghz and my overall connectivity is much better, and I can see all the images. That said I don't want to jinx it.