i also don't have any problem here. its totally ok. restart your computer or try to see from other computers. i think its a temporary problem. don't be worried.
Yesterday I noticed CJ affiliate Banners (from 5 different advertisers) did not load and they were all blank. On the same page there is a banner with another affiliate network and it was working. So it is CJ problem and I think CJ banners were not working due to maintenance or something. Today they are working. This is off topic,but 2 months ago all Youtube videos embedded in my site were all blank,not loading. After 2 hours they are back to nomal.