Blogger will soon contain redirects to country-code URLs or ccTLD’s for all Blogger sites except for custom domains. For example, if you’re in Australia and viewing [blogname].blogspot.com, you might be redirected to [blogname].blogspot.com.au. A ccTLD, when it appears, corresponds with the country of the reader’s current location. This causes an issue with IntenseDebate through the Blogger widget installation as different sets of comments will display depending on which ccTLD readers visit. They are strongly recommending that you move from the Blogger Widget installation to their Template installation which already addresses the necessary changes. Pay special attention to their instructions when making the move so you don’t lose any of your existing comments.
IntenseDebate Phasing Out Blogger Widget Installation