Mount St. Helens: Supervolcano?

Concern has arisen once again about Mount St. Helens, seen in the above photograph by the US Geological Survey during the initial explosion on 18 May 1980.

A summary of this historic eruption can be read here:

http://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens

But now there's concern brewing over what lies beneath Washtingon State's most active volcano:

http://www.newscientist.com/article/mg20227124.700-supervolcano-may-be-brewing-beneath-mount-st-helens.html