I was waiting for an OpenAFS release that worked on 10.9, and that finally came out late last week, so I took the plunge. It took a couple of hours to update everything (I had a bunch of Apple apps that wanted to update once the new software was installed, and Apple seems to think that updating apps is the most important thing I could possibly do with my network, so they download three multi-GB updates in parallel).
Now to figure out what features Apple has decided to take away in the latest OS. I’ve already had to find the system settings to turn the f***ing scroll bars back on. (Is there anyone left at Apple who is old enough to remember what the design requirements for scroll bars were?)