Facebook, its founder Mark Zuckerberg, and the banks leading its flotation are sued over claims that financial information was not disclosed.

Hewlett-Packard, the world's largest computer maker, is to cut 27,000 jobs by end of 2014 as part of a drive to "simplify" the business.

The social networking site, Facebook, and several banks leading its flotation are to be sued by disgruntled shareholders.