Too Much Air in the Cappucino?

According to this article in Fortune Magazine, Starbucks' stock may be trading at a Venti price despite a Doppo value. Apparently, following General Accounting Principles, 'Bucks exempts the cost of its stores' leases from the debt portion of the balance sheet. Those add up to $2.7 billion, or 10% of the company's net worth. They're probably not in actual trouble (at least as long as they avoid Krispy Kreme type expansion mistakes), but this news might make investors wake up and, well, you know . . . .