NASA has again postponed the launch of its Aura satellite because of an unknown problem with its recorder.

The institution says the launch will be pushed back one day to give scientists time to figure out the problem in the solid-state recorder, which will store the scientific information Aura collects and then beam it back to Earth.

It is the third delay in less than a week for the launch of the six-year, 780 million dollar mission to study pollution and the health of the Earth's atmosphere.

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IBM has introduced a line of new servers that it claims deliver up to triple the performance of servers made by its major rivals -- HP and Sun.

The line of UNIX and Linux servers, power by IBM's Power5 chips, also sport micro-partitioning technology that lets each processor run different operating systems.

IBM said its new eServer p5 systems are the result of a large- scale, three-year research and development effort.

The products will be available globally on Aug. 31 with starting prices ranging from 12,920 US dollars to 28,659 US dollars.

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The iTunes Music Store run by US computer company Apple has sold 100 million songs in about 15 months.

The 100 millionth song, "Somersault by Zero7, was purchased on Sunday by Kevin Britten, of Hays, Kansas.

According to Apple promotion, Britten is to receive a 17-inch
PowerBook notebook computer, a 40-gigabyte iPod and a gift certificate for 10,000 iTunes songs.