Expedia Inc. (NASDAQ: EXPE), the online travel company, announced that it would buyback 116.7 million shares. That was in June. The company's shares quickly jumped from under $24 to $29.

Today, the company announced that the share purchase program would be reduced to 25 million shares. The stock will be bought in a price range of $27.50 to $30.00. On the announcement, Expedia's price promptly dropped to $26.50, about 9% down.

Bloomberg quotes Expedia Chairman Barry Diller as saying, "The terms available to us in the current debt market environment were simply unacceptable." The company would have added $3.5 billion in debt to cover buying back the stock.

What happened? Well, credit is getting tighter, but it is never too tight for really attractive deals. The company is not exactly minting money. In the last reported quarter, net income was $38 million on revenue of $551 million. Interest payments for the quarter were about $11 million. With the additional $3.5 billion of debt on the books, interest payments could have gone up as much as 7 times. And there would not be a good enough ratio of operating income to the sum of the old debt plus the new borrowing Expedia would have made to buy the 116.7 million shares.

The simple reason that there may not have been debt available at good interest rates is that earnings would not support it.

Douglas A. McIntyre is a partner at 24/7 Wall St.