Hi. If you are using firefox/iceweasle, try seeing if it has a cache history to clear.
Edit --> Preferences --> Advanced --> Network --> Cached Content; Clear Now.
Also, you can try bouncing your network connection. (Haven't tried this personally yet)
root:~# ifdown eth0 (or wlan0 if your using wireless, may be dependent on what your connection is)
root:~# ifup eth0
You may want to try this command as well: /etc/init.d/networking restart
Let us know if this works for you, I am curious as well.
Fact, Science and the Pursuit of Knowledge. Working to secure your networks from threats; Outside and Within.