From the latest Eurobarometer, November 2010 edition (pg. 121). Note that the fieldwork was carried out in May. The question asked of respondents was:
Tell me whether you totally agree, tend to agree, tend to disagree or totally disagree with the following statement: (OUR COUNTRY) would have been better protected in the face of the current financial and economic crisis if we had kept the (FORMER NATIONAL CURRENCY).
The table below highlights the results by country as well as the difference between the latest Eurobarometer survey and the one directly preceding it. Happy spinning Commissars!
UPDATE: Our orange blogs have already started reporting on the new wave of this survey as part of a plot to take Greece out of the Euro.