Some months ago I regretfully posted an entry entitled Regressions Shouldn't Happen.
All of the bugs referenced in that posting have been fixed and patches have been released. In addition, a large number of additional bugs have been found and fixed. The current list of required patches is available here, and on the OpenSolaris Trusted Extensions page. If you are installing from the latest OpenSolaris build, or the upcoming Solaris 10 update 5 beta release, these fixes have already been incorporated into those distributions.
On a related issue, we have completed the integration of all of the "Extra Value" packages for Trusted Extensions into the standard Solaris and OpenSolaris metaclusters. I first wrote about this in Automatic Installation of Trusted Extensions. Starting with the Solaris 10 update 5 beta release, there is no longer any separate installation step for Trusted Extensions software. To enable multilevel security you will need to enter the following SMF service:
svcadm enable -s labeld