I also think Italy will leave in the near future, perhaps 2010. Ireland will eventually (+10 years) leave it. Estonia and some other states will join.
And Ireland, why on earth should Ireland leave the EMU?
There are a small number economists who are speaking up on the idea that Ireland maybe should be considering this - though they are the same voices that questioned entering in the first place. There's no evidence to suggest it has significant mainstream support.
The statements tend to get almost as much play in certain elements of the British media as they do here.