Aaron Tiensivu's Blog

Changes include:
#1. Full support for Windows Server 2008 and Vista Service Pack 1
#2. Additional Actions including Configure DHCP, Authorize DHCP, Configure DNS, and Configure ADDS
#3. New scripts that will automate the installation of Mass Storage Drivers for Windows XP/2003
#4. Ability to use a WSUS server for the Windows Update script
#5. Improved performance for the PXE Filter for SCCM 2007 unknown computer support
#6. Improved documentation including a new Quick Start Guide for SCCM 2007

Download MDT 2008 here or the update for BDD 2007 Update 2 here.

Read more about it here.

Make sure you exclude .VHD, and .AVHD files from being scanned because it can and will cause file lock issues/contention between your AV scanner and/or the Hyper-V services.

Ditto can be said for VMWare .vmdk files.

Some people are running into this issue with the new Hyper-V beta and it will error out with an error that will not typically lead you down this path while debugging the problem.

For instance on my external drive, I have a folder named "Virtual Machines" and I exclude the whole directory tree. That might be a bit excessive but it tends to prevent problems.