http://www.dropbox.com/s/ht0we4etlq0lhdq/ad.doubleclick.png?raw=1
It's because of that program. It's got ad.doublick.net blocked.
http://ad.doublick.net
If you want to remove that from your hosts file, let me know.
If you click onto the Staples link from this google search you'll see what I mean. You can still highlite the link and then choose to go to that site through right click though.
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