not recently, but when the upgrades to the site were being done a while back, something similar happened with videos - they wouldn't load or play if they did load. it took about a week before it got fixed then.
also, the problem could be in your system - i'd log off the site first, then, if you haven't already rebooted your computer, try doing that, & then log back on & see if that works. sometimes your computer may lose its "handshake" with the server & that can cause a problem like you're having...