System Image Utility (SIU) 10.6.0 to 10.6.2

I'm using the following workflow; the goal is to build an image based on the 10.6.0 installation DVD and to add the 10.6.2 Combo Update to the image so the clients are deployed with 10.6.2. Define Image Source Enable Automated Installation Add Packages and Post-Install Scripts (Add the 10.6.2 combo update .pkg file) Customize Package Selection (10.6.2 Update is selected as Default) Create Image The image builds cleanly and then I try to NetInstall a client. The install works fine, but in the installer log when it tries to install the 10.6.2 combo update, it throws an error saying that the package is untrusted. Has anyone seen behavior like this and knows of a way to resolve it? Is there a better way to accomplish building a 10.6.2 image from the 10.6.0 DVD and combo update?