Server 2008 updates fail

Using WSUS 3.0 V3.2.7600.226, set to download but not install updates; works
very well with
server 2003, with server 2008 what usually happens:
One update installs successfully; other updates fail, most common error
noted in update history is "Error details: Code 80070718
In Event Viewer I find this:
"Windows Servicing failed to complete the process of setting package
'whichever' into Install Requested (Install requeted) state".
So I restart the server, Autoupdate pops up with "udpates available", I get
usually one more udpate installed, all the remaining fail again with this
same error. Help, please, so I can keep these servers caught up with their
updates.