Internet HELP

[Tanks]

Hi,
Recently I have had the issue of not being able to load some webpages such as facebook, twitter, amazon and my battlenet account page in any browser. It would also be a problem for me logging into wow but i havent renewed my sub so I havent been able to try that yet.
I keep getting the message:

Google Chrome could not load the webpage because www.wow-europe.com took too long to respond. The website may be down, or you may be experiencing issues with your Internet connection.
Here are some suggestions:
Reload this webpage later.
Check your Internet connection. Restart any router, modem, or other network devices you may be using.
Add Google Chrome as a permitted program in your firewall's or antivirus software's settings. If it is already a permitted program, try deleting it from the list of permitted programs and adding it again.
If you use a proxy server, check your proxy settings or contact your network administrator to make sure the proxy server is working. If you don't believe you should be using a proxy server, adjust your proxy settings: Go to the Chrome menu > Settings > Show advanced settings... > Change proxy settings... > LAN Settings and deselect the "Use a proxy server for your LAN" checkbox.
Error 7 (net::ERR_TIMED_OUT): The operation timed out.

I think it happens with any site I have to sign in to? I have had this problem before but when i uninstalled norton and installed webroot it fixed and has worked fine until a few days ago.
I run windows 7 if thats any help.

Thanks.

[Cyanotical]

did you delete cookies, cache and browsing history?

[Tanks]

did you delete cookies, cache and browsing history?

Yeah ive tried all of that and it still doesnt work. Ive flushed the dns too

[tielknight]

Have you tried using a different browser to see if it's the browser causing it? Also make sure your java/flash/silverlight/etc are up-to-date.