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QuickTime Update for Leopard, Tiger and Windows

A QuickTime update has been released for Mac OS X Leopard, Mac OS X Tiger, Windows XP and Windows Vista users. Snow Leopard users are using QuickTime X (10.0) and are therefore unaffected by this update.

The release notes for QuickTime 7.6.4 state that it “includes changes that increase reliability, improve compatibility, and enhance security”. The update also includes support for iTunes 9 and “improved audio device support on Windows Vista”. It patches a vulnerability that could be exploited by a H.264 video file to crash QuickTime or execute code, according to PC World.

If you are using one of the supported operating systems and have not been notified of an update, you can run Software Update manually or download QuickTime 7.6.4 at

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