The UI's main menu has four categories: Phone (call log, contacts and profiles), Diary (email, calendar and messaging), Media (music, video, photos, camera and file manager) and Apps (with seven customizable shortcuts).

ENGADGET

Throughout the 1998 talks, there were frequent telephone calls from the Oval Office to the main players - culminating in a round of late-night contacts in the days leading up to the deadline.

BBC: Clinton: His role in Northern Ireland

There's a new main menu on the Skype app for Android where users can navigate easily through their contacts, access their Skype profile to change personal details or see the balance of their Skype Credit.

ENGADGET: Skype 2.0 brings two-way video calling to Nexus S, Desire S, Xperia Neo and Xperia Pro

Of the four main threats, it is the lone individual, self-radicalised on the internet and with no suspicious contacts or record of activism, who is the hardest to identify and deal with: organised networks are vulnerable to penetration.

ECONOMIST: Security at the Olympic games