Its looking like there will not be a monthly security update from Microsoft this month. Previously, it had been expected that Microsoft would be offering a patch to a critical flaw in its Windows operating system this week, but now this seems to have been cancelled. This is because an unspecified quality issue has been found with a software patch that was due. Normally, Microsoft releases most software patches on the second Tuesday of each month.

"It was a quality issue," said a Microsoft spokesperson. "They found something that made them realize that it was best not to release [the patch] this month," she said, adding that the company's security team decided it needed to put the Windows patch through additional testing.