(The Wall Street Journal) -- Many Wall Streeters head back from their Labor Day break hoping the financial market pains of July and August will be over.

Bankers have a mountain of low-grade debt to sell in the next few months. Investors have a long list of stocks and bonds to pick through that are much less expensive than they were a few months ago. Yet the setting is fraught with uncertainty. If the market is going to get back on its feet -- hardly a sure thing -- some tricky questions are going to need to be resolved soon.