I don't have some specific error, but rather some observation. I have a SLA month contract with dozens of companies, taking care of over 100 Windows servers in different environments.
What I notice as a rule is very slow NETWORK DISCOVERY within all 2008 and 2012 server installations. On contrary, all (without exception) older server 2003 environments exhibit blazing fast network discovery.
Under "network discovery" I mean look and feel when either on SERVER or on CLIENT somebody clicks on "Network" in explorer and wants to browse the network.
In 2003 environments the network displays within 1 or 2 seconds...
...but in all 2008 or later environments, it takes at least 15 seconds and up to 1 minute to display all computers in network. They pop-up one by one slowly, as like it has all day long to finish the task.
Any idea why?