This reminds me of the avantgo issue you had some time back. Isn't this pretty much the same?
Btw, it's kinda surprising to see that many people didn't upgrade away from Mobipocket, because around version 4.0 (as old as a year or more) the news creator was horribly inefficient. It was very slow and takes a lot of bandwidth. I don't know how the new version is because I stopped using it some time ago.