Ok lots of comments to put down on this one:
1. Dr Kelly was a shy sensitive guy.
http://www.timesonline.co.uk/article/0,,7813-831341,00.html
I have seen this several times and might suggest that he might deal with the pressure badly, take it more to heart and thus lead to the suicidal tendancies. Not that im saying all shy sensitive guys are prone to suicide but if you take it a bit further and suggest that he might have found it difficult to express his thoughts and feeling to other people then suicide is at least in the frame. ( I actually think this article is quite opiniated)
2. Murder
if it were murder done by govts or some other party, do you not think it might have been done a lot better, why leave questions, they are a govt, millions of pounds, lots of expertise. Pick em up and lose him, dont leave a body behind. Plus if they did leave a body behind they would have taken care of all the details. Left no doubt that it was suicide.
3. Not every death is clear cut.
http://www.newscientist.com/news/news.jsp?id=ns99993564
Basically it says 3500 people die each year die of uneplained cause each year and out of those after a study 150 were found to have no suggestive reason at all.
The Arcticle is about Sudden Adult Death Syndrome. My point is that not everything can be explained away, not everything is a conspiracy, science isnt fact. Statistics and proabability means that nothing is ever certain. Plus how many people have done a study looking at blood loss in suicide.
With Dr Kelly environmental factors may have played a large part, everyone has seen CSI crime scenes are complicated.
4.
Somebody said as a scientist he would have chosen a better way. Your proabably right, but what if it was a atempted suicide that went badly wrong. Cutting yourself is a common way to get attention and some people use attempted suicide to get attention. I dont want anyone to say im trivialising suicide or anything like that, im just asking a question.
5. Media conspiracy theory.
This is my personal conspiracy theory. The media dont have to tell the truth, they can basically say anything they want as long as it cant be directly challenged for a few days and then they can print a retraction and no one will notice. In other words we live in a media controlled world. They want to make money and sell papers or advertising therefore they report senationalist news. Which story would you want to read. Suicide confirmed, or doubts over suicide. After all how come the political opposition are always great as opposition but the minute they get in power they are terrible, because underdogs sell newspapers.
Well that my two cents worth, i shall get off my soap box now.