Five days after a hacker invaded Sony Computer Entertainment's PlayStation Network resulting in a lengthy outage, the video game giant has yet to offer a comprehensive explanation.PlayStation internet services went offline on Wednesday and have remained down.

Mobile phone maker Nokia has posted better-than-expected profits for the first three months of 2011, down 1% to 344m euros (£304m).

With the Nintendo 3DS, the Japanese video game company is betting that it can once again nudge mass entertainment in a new direction, just as it did nearly five years ago when it launched the Wii with its innovative motion-based controller.

This time, though, the competition from other devices is tougher.

As mobile data usage skyrockets, wireless companies are spending billions each year to maximize capacity, and consumers end up footing the cost in the form of higher cell phone bills.

But a cube that fits in the palm of your hand could help solve that problem.