I've been running a snapshot build (r10952) on my wrt3200acm that I built using image builder, and have tried a couple times over the past few months to upgrade. (I've been very pleased with the dual-boot layout for recovery purposes!)
Upgrading through luci, and preserving the existing configuration. I have also tried this via CLI over SSH, and it seems to be successful, but on reboot, the router doesn't appear to completely start up (it looks like it does get a connection to the Internet, but the wifi indicators never light up, and I can't get an address on the Ethernet ports).
Is there a way to look at the boot log on the alternate partition to see what's happening?