It seems like some other folks (Hi Dave!) had some trouble with file sharing on Leopard, and so did I. I thought I would just write up what I learned, and maybe it’ll help someone else.
In System Preferences -> Sharing -> File Sharing, I added the disk I wanted to access. I looked at the default permissions and decided they’d work for me. Next, I clicked on the Options… button and clicked on Share files and folders using AFP, which was not selected by default (at least in my case). I clicked on Done.
Next, I went to the other machine that I wanted to aces the newly shared disk, and selected command-k, which has long been the Finder’s place for mounting network volumes, and browsed to what I wanted, and everything seems to work.
I had also set the Finder preference to show the disk on the desktop, but I’m not sure that’s necessary, it just felt all home-like to this old Mac user.
Anyway, with that out of the way, here’s the problem… the consolidation of prefs, removal of NetInfo, or whatever improvements were generated by the update are a good thing one there own. But if there is no clear path for older users, if expected behavior is not defaulted for upgrades, than how is someone supposed to know that buried in a optional sheet is stuff that’s been standard for ages? Now I’m sure that various combinations of stuff probably caused this stuff to be set the way I expected, but there was no magic playing for my wife’s iMac, so it comes at some surprise to me that this stuff wouldn’t work out of the box.
The flip side I guess, was how easy screen sharing was out of the box… for me anyway. I’ll bet others have different stories though based on the trouble I had getting something as easy as file sharing going. Something that should “just work” didn’t, and while it doesn’t annoy as much as it does Scoble, or Dave, who had the annoyance of having an app he relies on break (no doubt as he has already noted, a portent of things to come for that app sadly), it still is not what I expect from my Mac experience either.