Older article from July but it was news to me when I received the link in an email. It's a legitimate article. My respect for President Bush has increased quite a bit after reading it.
http://www.msnbc.msn.com/id/25546334
http://www.truthorfiction.com/rumors/u/uraniumyellowcake.htm
This has been hashed out on here before. Simply put, it is nothing new and it certainly not a smoking gun. The yellowcake that the articles talk about was a known stockpile that existed before the '91 Gulf War and was monitored regularly after the war.
You have to keep in mind that yellowcake needs to be processed before it can be used in a power plant or for nuclear weapons. There are several processes to weaponize it and there was no evidence that Iraq attempted any of them after the Gulf War. And while the UN was publicly monitoring the storage area where the yellowcake was kept, I am certain they were not alone in doign that. You need a lot of raw material to make a nuke, and that kind of activity at the site would have been noticed by everyone and their brother.
As for why it was not moved before, maybe because no one was willing to move or take it. It was a lot of material, and it was not easy to move it. Easier to leave it there and monitor it.
So no, this is not the smoking gun that many are looking for. It doesn't change the fact there was no WMD, other than some scattered leftovers everyone forgot about, Saddam included. And no, it didn't go to Syria either.
Don't take my word for it though, here is the official report:
DCI Special Advisor Report on Iraq's WMD (the 'Duelfer Report')