Steps to reproduce:

1. Install 6u12 from http://jre.sfbay.sun.com/java/re/jdk/6u12/latest/bundles/windows-i586/
2. Install 6u21 online bundle from http://star-wip.sfbay.sun.com:88/en/
3. Publisher is Sun Microsystems in COntrol Panel-> Program Features.

Tested on Windows Vista 32-bit with IE8.

If only 6u21 is installed from the same site, the Publisher is shown as Oracle.
The exes like java.exe, javaws.exe also show Company as Sun Microsystems.
This happens when 6u12 is installed on Vista 32-bit, and then 6u21 b07 is installed on top of it.
> The exes like java.exe, javaws.exe also show Company as Sun Microsystems.
> This happens when 6u12 is installed on Vista 32-bit, and then 6u21 b07 is
> installed on top of it.

That is expected. It was the purpose of 6u21-b07.
See http://bt2ws.central.sun.com/CrPrint?id=6969236
This issue is visible for JDKFB bundles downloaded from https://cds-edit.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jdkfb-6u21-oth-JPR@CDS-CDS_SMI
Tested on Vista 64-bit with jdk-64.exe