I updated to Mavericks a day or two after it was available. Almost immediately I noticed a problem with the Finder > Go > Network operation.
I have a local network with a few machines on it: the MacBook Pro Retina I'm using now, running mavericks, an oldish Intel mini running snow leopard,and a couple of other machines. The SL machine has a couple of external drives, each with several partitions. All sharable.
The scenario is to to do Finder > Go > Network. Then click on the arrow to expand the available shares on one of the networked machines (the early Intel mac-mini running Snow Leopard.) The *first* time I do this (I'll explain "first" shortly) the partitions do show up.
Then click on one of them to mount it. The partition mounts, but then Finder displays an error message: "Operation can't be completed; an unexpected error occurred (error code 0)".
If I try to do it again, the partitions don't show up and the rotating busy wheel (not the beachball) shows up in the right-hand side of the status bar. It never stops (until the window is closed.)
Now, if after I've tried that a couple of times and *relaunch* the Finder it works the way it did at first.
Any time in this process if instead I do Finder > Connect to Server and put in the address ("afp://...") (or pick it from a saved list) of the machine in question it all works fine -- the list of shares shows up and I can select and mount one or more of them without any errors.
It doesn't matter what account I do all that in -- standard or admin, or which of any.