As United held firm, with an ever-present menace on the counter-attack, Ancelotti made a double change with 20 minutes left, replacing Yuri Zhirkov and Drogba with Florent Malouda and Nicolas Anelka.

BBC: Chelsea 0-1 Man Utd

My own estimate is that there are about 10, 000 white hat security researchers working full time to counter malware (100 vendors X 50 average and double that for independents.) I am still working on an estimate of the number arrayed on the other side of this battle ground.

FORBES: Battleground Cyberspace: Hackers vs. White Hats

Although the housing market has stabilized over the last half a year, the chorus calling for a double dip in housing is growing louder as data such as this runs counter to a sustainable recovery thesis.

FORBES: Housing Starts Stumble After Stimulus

These love to pretend that they live in one of the world's toughest urban jungles, beset by warring gangs and malevolent Nature, when, in reality, the biggest danger they face is that the person behind the counter at Starbucks might mis-hear their order for a double tall, decaf, non-fat latte with a vanilla shot and make their coffee with full-fat milk by mistake.

ECONOMIST: California life: City of frauds | The

When it said recently it expected the UK economy to shrink slightly in the first quarter of 2012, I did wonder whether the downbeat prediction would turn out to be a counter-indicator - a sign that we had definitely avoided a double dip.

BBC: Britain's zig-zag economy

It has its own new counter-terrorism centre, but it has focused largely on setting up double-check systems to see that material is genuine and assessments are challenged.

ECONOMIST: The use and abuse of secret agencies

The Merseysiders were briefly forced on the back foot as Villa settled into a pattern of counter-attacking football, with John Carew muscling his way into the box to force Howard into a double save from Ashley Young after a brilliant block from Phil Jagielka.

BBC: Aston Villa 1-0 Everton

But just two years later cardiologists warned of a potential problem: Merck's own 8, 000-person study, the same one that showed Vioxx reduced ulcer complications, also found that patients on the drug had more than double the risk of heart problems of those on another painkiller, naproxen (the ingredient in over-the-counter Aleve).

FORBES: Merck's Mess