I have several sites on the hub, which I'm trying to automate upgrades and backups
it seems some sites update fine while others immediately fail with the error
cURL error 51: SSL peer certificate or SSH remote key was not OK
ive had a discussion a while back about this and support asked me to get hold of my host to see if openssl or cURL was out of date, they didn't see an issue.
also I have several sites on the same webserver with my host, some work and some don't and they are on the same server