Facebook Profile Pictures Do Not Load.

I am running the latest version of Snow Leapord (all updates installed). For the past few months, various photos in facebook will not load. It seems random on each refresh as to what will appear. I have tried several different browsers (Firefox, Safari, Chrome). They Start out well but after surfing for a few minutes begin to go down hill. I have uninstalled and reinstalled the browsers, cleared cache, cleared history, reset, etc. I have dug through forums for weeks with no luck. I would greatly appreciate any ideas. I will add a screenshot of what appears.

Thanks,

Frustrated Facebooker