I have updated my build from 46957 to 48249 and 48249 to 49922. I see various TS2012 service packs are also available. Questions: 1. Are the service packs also needed or are their contents included in the build updates? 2. If the service packs are also needed, are all needed or does the last numbered service pack include the elements of the previous service packs? I would appreciate feedback on these questions. Thanks.