Thanks for the responses. However, nobody has been able to help yet. There is clearly a conflict between the browsers and the KIS.
Here is some more information:
1. I get the same problems with IE9, Firefox and Chrome on my machine. That is, when I disable KIS 2013 everything works fine. When I enable KIS 2013 I get the same problems on all the browsers. (This implies, to me, that it might not be due to browser settings).
2. One of the other problems I get is that I cannot download Firefox plugins when KIS 2013 is enabled. When disabled, everything works fine.
Can someone please help me here and reassure me that KIS2013 is not a complete pile of... sorry, a complete waste of time and money. I have installed it mainly for the parental controls settings.