There are times when you need to find out what version of SharePoint Foundation you are currently running. The easiest way to do this is to look in SharePoint Central Administration via the following procedure:
On the SharePoint Foundation Server select Start | Microsoft SharePoint 2010 Products | SharePoint 2010 Central Administration.
When the SharePoint Central Administration appears select Manage Servers in Farm from under the System Settings in the top right.
In the middle of the page locate Configuration database version and compare the number you find here with:
You’ll then know whether you are running the latest version.