If you are struggling with trying to diagnose LUA, or Least-Privilege User Account bugs in your Vista, Server 2003 or XP environments, then Aaron Margosis has a tool for you. The tool is called LUA Buglight and, while it’s in beta, it still may be a useful tool for you developers and system administrators out there.
What it does is grant temporary administrator privilege for a targeted app so that it can run. Buglight watches the app and what it does, and then reports on behaviors of the app that require remediation in order to be “well-behaved.”
I’m going to check this out on my locked-down Vista VPCs where I do my app compat testing.