Mr Gates was accompanied by Gen Ray Odierno, the top US commander in Iraq.
Mr Gates may feel a little queasy about the Red Hat alliance for another reason.
Mr McKenna had denied negligence and said Mr Gates' illness was not caused by being hypnotised.
In the long run, Linux and other open-source programs could cause Mr Gates much grief.
For now, the grace of Mr Gates has descended on Mr Roberts's young head.
Mr Norris was pressed about this, but pointed out that "smear" was Mr Gates' word.
Mr Gates was wrong, in that those approaches were not adopted and spam remains pervasive.
ECONOMIST: Unwanted e-mails are no longer the menace they once were
He shook hands with Mr Gates but there were no bilateral powwows, as in past years.
Mr Gates sees it as a way to establish trust when it is lacking.
ECONOMIST: Military-to-military relationships: The ties that bind | The
Mr Gates replied evenly that a stealth torpedo attack was quite different from enforcing a coastal blockade.
Mr Gates says the task-force will interview soldiers to find out how a repeal would affect their morale.
But at a meeting with analysts last month, Mr Gates acknowledged that Microsoft would expand its security-software offering.
In his lecture Mr Gates will liken the pace of innovation in computers with the fight against polio: .
Improbable though it seems, Judge Jackson may be hoping that Mr Gates is ready to make a bold move.
Mr Gates, he said, had urged both sides to try to settle their disputes before US forces left Iraq.
Mr Gates is surely right that the Europeans have become over-reliant on American military capacity, in Libya and elsewhere.
"All these new designs are going to be incredibly safe, " Mr Gates said.
But America, Mr Gates insisted in Singapore, wants to remain an Asia-Pacific power.
ECONOMIST: The South China Sea becomes a zone of eternal dispute
Mr Gates was talking about the nuts and bolts of how that happens.
Mr Gates, writing in The Economist two weeks ago, also dodged the issue.
The lawsuit filed on Tuesday by the group, which includes both sexes, names Mr Gates and his predecessor, Donald Rumsfeld.
QVC, an American television-shopping network, it also offers Mr Gates a window on the more familiar kind of electronic shopping.
But Mr Gates is surely right to believe that no form of diplomacy succeeds without consistency, patience and long-term investment.
ECONOMIST: Military-to-military relationships: The ties that bind | The
Mary Jo Foley, a long-time Microsoft correspondent, thinks it will lose something vital when Mr Gates walks out of the door.
He let Mr Gates replace the stolid General David McKiernan in Afghanistan with the piratical master of black ops, Stanley McChrystal.
Mr Gates believed this could weaken the applications barrier to entry by usurping Windows as the main platform for software developers.
America's new rich are already beginning to do so, but mostly (with Mr Gates a notable exception) on a small scale.
Mr Gates recognises that computing will no longer be confined to the desktop, which he controls thanks to the dominance of Windows.
During Mr Gates's last visit to Beijing, his hosts agreed to set up a hotline between the Pentagon and China's defence ministry.
Like Mr Gates, he has a deep knowledge of military and intelligence affairs, broad bipartisan support and a streak of stubborn independence.
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