Just a quick note on how to get SharePoint 2010 build number. Run following in SharePoint 2010 Management Shell:
\n\n
(get-spfarm).buildversion
It will return you something like this:
Detailed list of SharePoint builds which will allow you to translate this output into “human language” SharePoint 2010 SP/patch level can be found for example here or even better reference is SharePoint Patch Reference on MSDN.