Not sure if it's entirely related to this or not, but I had a strange situation after I updated my rMBP to Mavericks. (Only machine in our house running it.)
After the update: every time Mavericks accessed SMB shares on my home-built NAS box running Windows 7 x64, thereafter every comp running Mountain Lion couldn't connect. (All of our Hacks, and my wife's MacBook Air).
This remained until a reboot of the NAS, but then would happen again after Mavericks connected.
It was a strange little glitch. I couldn't find any info about it.
I don't even remember how, but somehow I stumbled across this:
I wasn't getting Error 36, but I figured I'd give the registry change a shot anyway in the hope it might be related... and lo and behold, it worked. Not a single SMB glitch ever since- both Mavericks and Mountain Lion accessing my NAS with no problems, not a single NAS reboot in weeks.