Hi
I have the same problem
On the default page the server 2008 systems are picked up as windows7
If you click on the link to display the windows 7 machines the 2008 servers are listed
The license is picked up correctly in the OS license compliance and in the computer detail page of each server.
One other thing, There are no memory details on the computer details page for:
Microsoft Windows Server 2008 R2 Datacenter
Windows 2000 Professional
The machines were scanned without any errors
Otherwise it's looking good so far