Looks like none of the 401(k) investors who responded are contributing the minimum 15% of annual income suggested by the analysts.
Due to a series of rather significant health problems this year I've run my CC debt up from 0 to $2500, so according to bran's sound advice I'll want to pay that back off before I up my contributions to the 15% level.
Someone on the first page of the thread asked if the analysts were factoring in other investment methods for retirement income when they calulated the 15% minimum contribution, and the answer is no. That minimum level of contribution is for people who have no other retirement income plans apart from SS benefits.