Microsoft issued an emergency update to all Windows computers and servers June 3 to revoke the stolen certificate.

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Other than the update already delivered for computers running OS 10.6 and 10.7 Apple recommends users on 10.5 and earlier disable Java in their browser preferences.

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He also expect Apple to update some of its Mac computers.

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Apple's long-awaited update to its PowerMac line of computers puts two chips in every box.

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However, a "hotfix" has been made available but Microsoft said this should only be installed on those computers crashing because of the update.

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And you have the update problem, where people replace their computers every two to three years, whereas its six to eight years for TV.

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The company advises users to install the update on all "MacBook and MacBook Pro computers and extra batteries that were purchased between February 2006 and April 2007".

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