Apple updates not being applied

Very strange issue. When I am creating my image, none of the Apple updates are not being applied to the image being created. I am running the latest version of InstaDMG. The vanilla catalog has the proper links so that's not the issue. I cleared out all cached downloads and even the cached base image. I am setting the date back 2 months since I can't get a hold of the latest 10.7.3 installer. I hear that this works to avoid the issue with the expired certificates. The computer is online during this time though. Is anyone else having a similar experience? Any ideas?