Thank God for Pprune!
I've been getting this problem / am in the middle of trying to sort it out. Assuming it's the same thing - a pale blue screen with 'find something interesting' in the top left corner and a bunch of links, many adult, in nature. And a pic of of a pretty, clothed female.
The IP addresses in the TCP/IP boxes are 85 255 114 20 and 85 255 112 175. Is there a specific way to block these addresses then?