I've just checked my own update history, (Desktop, Vista Ultimate, 64 bit, running ZA as anti-virus). It installed on June 23 without problem.
Good to know though if others are having problems with this.
Mark
My Vista laptop couldn't install KB982480 until I disabled the antivirus and antispyware software.
Reboot and then re-enabled the protection without much else to report. Hope this helps others.
Bob

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