Uh...really? Quantum of Solace?

Quantum of Solace comes from the title of a short story in Flemming’s For Your Eyes Only. But it still seems to come from NOWHERE. What does it mean? Are they serious? I waited so long to write this in the hopes that it was a joke – a prank – anything but the truth. But finally reality has sunk in.

Daniel Craig says: "I was unsure at first. Bond is looking for his quantum of solace and that's what he wants, he wants his closure. Ian Fleming says that if you don't have a quantum of solace in your relationship then the relationship is over. It's that spark of niceness in a relationship that if you don't have you might as well give up. Bond doesn't have that because his girlfriend has been killed," [and therefore, Bond is] looking for revenge [...] to make himself happy with the world again. But the title also alludes to something else in the film."

Here is the summary every other website is copying and pasting:

Betrayed by Vesper, the woman he loved, 007 fights the urge to make his latest mission personal. Pursuing his determination to uncover the truth, Bond and M (JUDI DENCH) interrogate Mr White (JESPER CHRISTENSEN) who reveals the organisation which blackmailed Vesper is far more complex and dangerous than anyone had imagined.
Forensic intelligence links an Mi6 traitor to a bank account in Haiti where a case of mistaken identity introduces Bond to the beautiful but feisty Camille (OLGA KURYLENKO), a woman who has her own vendetta. Camille leads Bond straight to Dominic Greene (MATHIEU AMALRIC), a ruthless business man and major force within the mysterious organisation.
On a mission that leads him to Austria, Italy and South America, Bond discovers that Greene, conspiring to take total control of one of the world’s most important natural resources, is forging a deal with the exiled General Medrano (JOAQUIN COSIO). Using his associates in the organisation, and manipulating his powerful contacts within the CIA and the British government, Greene promises to overthrow the existing regime in a Latin American country, giving the General control of the country in exchange for a seemingly barren piece of land.
In a minefield of treachery, murder and deceit, Bond allies with old friends in a battle to uncover the truth. As he gets closer to finding the man responsible for the betrayal of Vesper, 007 must keep one step ahead of the CIA, the terrorists and even M, to unravel Greene’s sinister plan and stop his organisation.

Related reading:

"Quantum What?" @ SaltyStix
"Everything changes but bond" @ The Guardian
"The Title is Meant to Confuse" @ This is North Scotland