Retirement really does present two different challenges;  accumulating  a retirement nest egg, and then trying to generate income that will last a lifetime.  Walter Updegrave at CNNMoney provides some solutions.

In many ways, managing your assets so that you don't run out of money is trickier than saving it in the first place. One reason is that you have less wiggle room. During your career, you have plenty of time to bounce back from stock market slumps and poor investment choices. After you've retired, the clock is no longer on your side.