Weird internet/vBulletin issues.

I've recently reset my router, and since then, I noticed that various images have been missing. However, the oddest thing is, it only happens on vBulletin boards. (There's about three which I'm a regular on, including this one).

For example, the little icons beside posts often either go missing or replaced with text.

I've cleared the cache a few times, no luck, actually made it worse.

Otherwise loads fine.

Any ideas?

 

Weird thing it worked before

Oh look, screenie: