April 2013 Cumulative Update and MS13-035 BlobCache Errors

In SharePoint 2010, the April 2013 Cumulative Update and MS13-035 cause blobcache errors that look similar to this in the ULS log: [crayon-517cbfc1f2085/] Others have identified that the SharePoint 2013 March PU and SharePoint 2010 February Cumulative Update also cause this issue.  This only appears when a file is in an unapproved/unpublished state.  Once the [...]