This is part of a larger change to make the default auto update policy Notify Before Install. There are a large number of -65 pings, which correspond to user cancellations on the download dialog. This occurs because the default policy is Notify Before Download, and so when a user agrees to an auto update, they then have to wait for the install files to be downloaded in the foreground before the install will run. We're seeing a high number of cancellations on this download dialog and so are trying to address that issue by pre-downloading the install files in the background before notifying the user of the update.

The default policy was changed in 6u14 due to server infrastructure and bandwidth usage concerns. Those concerns have been addressed by reducing HTTP connections, firewall upgrade and other AU bugfixes. Additional code will be added to subsequent installers to ignore the Notify Before Install policy if a certain XML flag is set. This way the policy change can be temporarily reverted on the fly in case of bandwidth or server utilization spikes.