When you install SunVTS using Web Start 2.0, you are not prompted to enable the Sun Enterprise Authentication MechanismTM (SEAM) Kerberos v5, SunVTS security feature. The installation defaults in a way that installs SunVTS without this high level of security. If you do not want the high-level security, there is no problem.
Workaround: To enable the high-level SEAM security, use the pkgadd command to install SunVTS packages as described in the SunVTS 4.6 User's Guide.