When you configure a member server as a TS License Server, Terminals Servers on the network might not be able to discover it and you may receive the following message:

TS CALs are not available for this terminal server, and Licensing Diagnosis has identified licensing problems for the terminal server.

%Servername% The terminal server is within its grace period, but the terminal server has not discovered any license servers.

During the installation of .Net4 update a Windows 2008 you may receive the error code: 80200053.  Although, all other updates are installed without issues, this one is an exception. 

Solution:

To fix this error, please follow these steps:

Disable any security program that is installed on your machine. It is essential to turn off or disable real-time scanning or suspend real-time scanning (depends on the type of the AV software installed on your machine)
Run services.msc (Start | Run, type “services.msc” and hit Enter)
Navigate to “Windows Update” service
Right click on the service and click 'Restart'
Run Windows Update
Install this problematic update
After completing the installation, be sure to re-enable your security program to normal functionality, so you can stay protected

We have one DHCP server with configured Superscope that contains 15 scopes.
As we had some DHCP issues in our VLAN environment, we had to remove all 15 scopes from the superscope. When the last scope was removed from the Superscope, superscope was deleted automatically.

Now, everything is working fine, but after the DHCP server or service is restarted, users complained that they still experience that 'old' DHCP issues when physically changing VLAN's. More HERE.

Microsoft supports running SCCM 2007 SP2 on a 2008 R2 server, but I’m doubting whether or not running SCCM 2007 SP2 in Native mode in an environment using a 2008 R2 CA is supported (and if so, there’s an issue to be aware of).  Specifically, it seems like client certificates created with a 2008 R2 CA (following the instructions on Technet for a 2008 CA) do not work by default in SCCM 2007 when running a site in Native mode (you’ll get MP errors stating that it cannot connect via HTTP, and mpcontrol.log will contain errors that the SAN2 fields have errors).