Keeping up with patches and updates to beta software can be a PITA, particularly when a lot of different products are wrapped around each other like Microsoft Office SharePoint Server (MOSS), Windows Workflow, etc. are.
The Tech Refresh for MOSS was released a week or two ago. Installing it can be a bit tricky, but the SharePoint Team Blog has a great list of resources, including walk-throughs of the install process complete with screenshots. Useful stuff!