Hi Jimp,
I was surprised as well, as the previous one went flawless.
No errors seen. I was not monitoring console, everything went through webgui. Did not bother to go looking in the logs, as it looked to be set to factory defaults?
I just went through my syslog (pfSense nano seems to be limited to 2000 entries), no errors. Judging by the log, all went fine. If you are really curious, I can send or attach part of my syslog server entries. There is still the part of upgrade until reboot after upgrade. I'm missing part of course where the pfSense's IP range was wrong (default), up to where I have done the restore.
If you want other info, I'll be happy to provide any log you want, just let me know.
PS: don't know if it is related, but while checking those logs, I just noticed I have a new issue: lots of NSSWITCH entries in my syslog ??? I seem to remember that was reported here by other users, need to check…
[edit: not related & already fixed by your workaround from april 26th 2013]