If one of the worst earthquakes on record can't break the containment vessel in these old plants, then I think we're actually doing very well.
Edit: If you want to read up on the radiation levels: http://www.stratfor.com/analysis/20110315-red-alert-radiatio...
The earthquake and subsequent effects of the earthquake destroyed these reactors. It's a pointless distinction to say otherwise, designed to soften the blow to nuclear power's reputation.
(Unit 4, BTW, is shut down & stable, but it is the building with the fire in the spent fuel pond)
I'd wait until we have clear news about what's going on before making an opinion.