Hey folks - just chiming in here:
We're still investigating this now, but we haven't identified any new issues that would cause this behaviour (so far). We're still pursuing this.
However, in the meantime, if you're having problems, send our support team a ticket. Networks have a lot of moving parts, and often times different setups will require different solutions, and are just the result of a LAN connectivity issue, rather than a bug. We can help get you up and running - and at the same time help our investigation.