It's on an amd64. As for the snapshot time, I'm not exactly sure. It would have been whatever the latest was that was available around 8 EDT on 4/18 since that's around the time I did the upgrade from the GUI. It was a build from earlier that day (11am or 1pm maybe).
One other thing I forgot to mention was that just before doing the upgrade I just started having it report to a syslog server. That was the first time I tried upgrading since activating the syslog server.
Not enough info there to say anything for sure. i386 or amd64? What was the exact snapshot time?
I have a couple VMs running the latest snapshot and haven't had any problems myself.