I'm having problems with #136.
First, right off the bat, my NC was locking on boot. I was using a combination of undervolt/overclock settings that was completely stable in #128, but with #136, as soon as Nook Tweaks would make its changes my Nook would lock up solid. I needed to flash back to a previous version, and default the N.C.T. settings so I could re-reflash #136 and actually get into it.
After I made 136 stable, I decided to leave it set on the default clocks, 1.2GHz/300MHz but no voltage or other clock changes. I've encountered many SODs, to the point where I'm scared to put it away for a few hours because I'm not sure it'll wake when I need it. It reboots quickly, though.
Which leads me to my last point; I am not able to acheive any sort of long term stability if the clocks or voltages have been altered with N.C.T. My device is crashing and rebooting often.
Flashed back again to #128 and all is right with the world.