Well, if IPv6 remained up, it's definitely not the same issue.. in my case, I had zero connectivity and the port on the remote end was down.
It's time to inquire if they ever reproduced that issue though so that whomever is the blame can work out a fix.
Speaking of IPv6.. those of you who have it working, is there something I'm missing in my setup instructions? I see both WAN and LAN having an IPv6 addy, but my PCs don't seem to be getting one.. they still report no Internet connectiviy on IPv6 so my setup must not be complete yet.