Over a long and enviable career, Warren Buffett and Berkshire Hathaway have amassed one of the most enviable track records in all of investing. Having kept to the basics of largely buying great companies he understands at fair prices, Buffett has been an example for investors the world over. And while technology has famously been an area he's avoided like the plague, he has purchased one tech stock -- the venerable IBM (NYSE:IBM). And while it remains a solid blue chip, the company's been in a bit of a rut lately. In this video, Fool contributor Andrew Tonner breaks down the recent goings-on at Big Blue and whether it remains a buy for investors today.