That has happened to us before, but we just resubbed and it was working again.
Not really a big deal, since it's easy to get them started back up.
We're going on a four day trip soon, and won't be able to use the site, but that's not too long to get them stopped.
Been distracted the last few days, and have skipped a few, but I just did one, which shows I'm still interested. Mostly been busy preparing for traveling and all.