Comment 5 for bug 2019003

When upgrading a service, the old service is shut down but it can take a bit of time for the port it communicates on to be freed for the newly upgraded version of the service to bind to. I believe there is a wait() or other code to deal with this, but given we see instances of this error crop up routinely with mysql there must be a race condition or something.

Anyway, John's suggestion to retry installing the latest update is a good workaround.