IBM Is Roaring Back

The IBM stock price has plunged 20% since the beginning of the year.

It's up almost 10% today after the upbeat earning results.  Since August this year, the stocks have trimmed almost 1/2 of its losses.  The reversal is quite impressive.

However, has IBM turned the corner?  With rising debt, falling margins, declining sales and earnings growth for the past 5 years, is it time to buy IBM?