I'm also seeing this sometimes. Don't use Norton. More often the pages won't load properly (as if it can't resolve the DNS address). It happens in Firefox too.... There is an issue with win8 as the same machine with win7 works perfectly
I'm experiencing exactly the same problems as the rest of you with really slow loading times on certain pages (not all). It seems that my computer have a problem with external scripts on certain pages and loading wheel just spins up in the browser window. Sometimes it does not even load google but it pops up an error page.
I have a brand new Acer Aspire V3 571g and usually use Firefox. I have updated all my drivers, uninstalled all unnecessary programs and antivirus. Some said that it was the power options in the computor that could interfear but no, no. I'm getting desperate! There must be a solution to this.
I had the same problem you have. Go to this website: http://www.sevenforums.com/network-sharing/74556-enable-disable-tcp-auto-tuning.html
enter the command in bold lettering into an elevated command prompt (RUN AS ADMIN) and you should be golden.
IDK why this worked for me, but it fixed all my network problems.