If you have looked at your AIUpdateSvc.log file lately you may have notice a few errors in there showing that you are not syncing with the System Center Online Catalog.  The errors may look something like this: Asset Intelligence Catalog Sync...

  On Server 2008/Vista and Server 2008R2/Windows 7 machines you will not find the patch information in Resource Explorer like you will for other OS’s.  This is due to a change in the way that those OS’s store their patch information.  ...