Q329077: Security Update
Download size: 164 KB, < 1 minute
This update resolves the "Java Applet" vulnerabilities in Microsoft virtual machine (Microsoft VM).
This update is also available for Windows .NET Server 2003.


CHECK THE M$ UPDATE SITE

FYI
I dont have MS virtual machine installed, instead I have Sun's installed and I didn't need this update.
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source: MSFN.org