SCCM Team Blog: Introducing the Pull-Distribution Points

If you are one of the victims of bottle neck distribution points with a simplified hierarchy with no secondary sites then you are in luck. 

With Cumulative Update 1 to System Center Configuration Manager the added Pull-Distribution points corrects this issue. 

Read the explanation here:

http://blogs.technet.com/b/configmgrteam/archive/2013/06/06/introducing-the-pull-distribution-points.aspx