OK, here's an article about it:

http://www.reuters.com/newsArticle.jhtml?type=topNews&storyID=5761856

So the issue is that people have questions that they are having trouble finding answers to. Some issues are due to some issues finding certain military records. Some issues are around finding witnesses. But all i've seen is lack of evidence that is being used to assume a possible issue.

The issue with Kerry is much more air tight it would seem and not based purely on assumptions. We have many witnesses, motive, his own words from recorded interviews and public testimony, his own words from his book, his military records (that we don't have all of dispite promises), etc.