This happens to me now and then with CNN.com. I think it's a combination of the browser, your IP address, etc. The router your device is connected talks to your ISP router which may have a web-cache. Every time you visit cnn.com, the ISP router (which ultimately connects to the CNN.com webserver) maybe different depending upon your ISP. So you might observe this anomaly depending upon how you reach the CNN.com webserver.
So relax, it's not your fault