The current "crisis" is a correction. Hundreds of billions of dollars of bad investments have been destroying wealth, dragging the economy down, and generally preventing people from being able to buy enough Lego.
With the correction, the banks responsible for the bad investments (mostly located in countries with poor monetary policy, like the US) will go bankrupt, and their assets will be transferred to other banks and companies that can use them in a profitable manner. In the meantime, the exhaustion of lendable resources will force people and companies to increase their savings rate for a while, but ultimately we'll be better off than before, and be able to buy more Lego than before, so long as governments don't screw things up more through inflation or something.
In the meantime, Lego is getting an increasing share of business from growing markets in Eastern Europe and Asia. Hopefully that will help to offset any problems elsewhere.