Microssoft responded to the game informer survey that said that the Xbox 360 has a 54.2% failure rate.

Here's the response:

Microsoft stands behind the Xbox 360 as a superior entertainment console with one of the best warranties in the industry. We are constantly improving the design, manufacture and performance of the console through extensive testing of potential sources of any problems. Xbox 360 is pleased to maintain the title of 'most played console' and the vast majority of Xbox 360 customers have enjoyed a terrific gaming and entertainment experience since their first day, and continue to, day in and day out.

 [TG Daily via Kotaku]