Why aren't Pogo games working on this computer? Help?

It was working up until recently. I disabled the firewall, antivirus. that didn't help. I uninstalled and reinstalled Java, nothing. My popup blocker is not on. The loading window appears and it just keeps on loading, no ad appears, nothing loads. I emptied the Java and browser cache, nothing. I signed on a different computer, and it worked fine, so it's not Pogo, it's this computer. I've done everything they suggested to do, Is there something else I can try?