See this article in the London Daily Mail concerning difficulties in the Euro zone. Even if the Euro scare mongering is a bit extreme, the quote from David Cameron, leader of the Tories and likely next Prime Minister to the effect that the U.K. will never join the Euro zone on his watch is relatively unequivocal.
I'm surprised it took so long for the Euro to get into real trouble. Trying to get one currency to fit countries as different as Germany and Portugal seems unrealistic. Right now Greece is the boil on the bum of Europe. More broadly, Euro prognosticators talk about problems in the PIIGS countries, the acronym stands for Portugal, Ireland, Italy, Greece, and Spain. This will be an issue to watch.
If you want a more rigorous treatment of the same issues, see this one from The Wall Street Journal. If anything, it is less optimistic.
