ok the images in the first thread are located on the same location like the tread itself. (subsim server) They´re signature pictures..
The ones on the second thread are hosted somewhere else (imageshack server) and are not displayed by your browser cause of a security setting.
you can point the mouse over an image, the location should be displayed in the lower left corner of your browser.
I´guess i found the setting in IE that has to be changed. But i have a german browser and as you can see my english is broken.
The setting is called "auf Datenquellen über Domänengrenzen hinweg zugreifen" in german.
It is located in the security settings tab in your browser settings.
Gizzmoe is a good english speaker and german too, maybe he could translate. I´ll pm him.
How about using firefox browser? :P