Microsoft have recently released a very cool tool that allows you to visually check our your Active Directory Replication status. Normally you would use repadmin to check the status of AD and the results of that would be viewed in the command window, and require interpretation. This tool is a GUI tool that allows less experienced admins to check the status of Active directory replication and then from there decide on what needs to be done to resolve any issues. It’s nice to see a simple tool like this from Microsoft makes a complex problem a little easier to handle.
You can download the tool here