User icons are a no-show

The user icons (at the side of each post) are suddenly missing on my forum. This only happened in the last couple of hours or so, and when I go into the Administration panel it shows that everyone (we have a whopping population of six or seven people) has uploaded icons, and they show there. However, when someone posts, it no longer shows. Icons are turned on, because I am the only one with administration privileges and I have not changed it.

Here's a thread for a example, if you need it: http://vitamin-c.userboard.net/t17-so-i-ve-been-working-out

Don't really understand, what user icons?

Exactly.

No, I get you. See where the names of the users are? You have what appears to be a transformer as your user icon - or profile icon - above your name. In my forum they are missing, not loading at all, and I don't know why.

Display>Pics management
ADvanced mode
Check if the images are there?

I didn't even have to try, they came back on their own. The image host or whatever must have been having problems. =/

Sorry for wasting your time and TY for the help.