Can any Nikon D-slr camera owners tell me why the 50mm 1.4g is on back order everywhere?

I searched everywhere for this lens (previous model: 1.4d). Any suggestions?

2 left in stock
http://www.amazon.com/...001GCVA0U/

The tsunami caused all kinds of problems. You don't worry about making lenses too much if you have problems with food and shelter.

Be patient, things will improve.