Safari page links show on Internet connection
Using safari when I click a link from a web page being displayed I get the grey "you are not connected to the Internet" screen if I then click refresh the page appears. If I page back I get the main page not the grey screen. I am connected via Ethernet and this has just started happening in the last week.
iMac (27-inch Late 2009), OS X Mountain Lion (10.8.2)