This bug is observed with JFB build jrefb-621-solaris-sparc.sh downloaded from internal hosting
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jrefb-6u21-oth-JPR@CDS-CDS_SMI


Steps:
1) Download the bundle from the location mentioned above
2) Install this on a Solaris Sparc 11 machine.
3) Go to the jre folder (newly installed) and open Welcome.html file (using any browser).
4) There is a line in that page under references heading
See the "Java for business" for more information.
5) Click on that link

If you see, Page not found, the bug is reproduced.