Hello to all,
Herewith a solution:
This problem has been bugging me on 10 computers on our network. I've changed all antivirus program settings, reinstalled the full OS etc, and lost my patience with IE.
However, not one to give up easily, tinkered around, and changed the following under tools>internet options>connections, LAN button I have unchecked the Automatically detect settings.
Et voilĂ ! all 10 machines are humming along beautifulla. The same trick has worked for several friends suffering from the same problem on their home networks: all solved!
Hope this works for you.