The Visual Studio 2005 Team System blog functions as sort of a FAQ in blog form. They've started posting known issues and workarounds for the new beta release. The first two posts are about the problems antivirus software can cause during setup and what to do about AD/AM setup failures due to spaces in paths.
Did you install your beta data tier in Virtual PC or Virtual Server and see a high CPU load while its running? Even on real hardware, you may notice some load when nothing would appear to be going on. Someone mentioned on an internal mailing list that the data tier CPU load for a combined app and data tier installed
Speaking of the forum, be sure to check out the Visual Studio Team Foundation forum. Folks like Mike have posted useful information, and lots of MS folks are answering questions. You may even get an answer from Rick LaPlante.The MSDN forums are nice, and they've obviously put quite a bit of work into them. The forums are
Mike Attili has a nice post on fixing reporting service permissions, Problems with SQL Server Reporting Services Permissions. Bruce Taimana answered his post in the forum stating that was the correct way to handle it in the beta.