May I guess you’re browsing with Firefox? In FF-v.37 (the system I’m using), many pictures from ImageShack won’t come through; but they DO come through in Opera-v.12. Is it Firefox-gone-broken or the-politics-of-ImageShack? (Well, I don’t use ImageShack any more after they wiped away their previous database and most of OT’s pictures in the process in a re-organization about a year or so ago.)
In Firefox, my solution is to right-click on the “missing picture” area, select “view image”, hi-light the address-bar for the image (not showing at this point), and press the Enter-key (to force a hard refresh). The picture will come through if ImageShack still has it. I’ve already tested it and ImageShack still has them all. What a pain! : )