Leopard Problems with Shared Drives
After upgrading to 10.5.1, and starting to adjust the firewall settings, each of the other macs in the house had login errors with the aliases and I had to reauthenticate as the admin again into the G5, make a new alias and everything was fine.
After playing with the Back to my Mac settings to try to get this working (I sent several links to apple docs on BTTM setup, router compatibility, security, inability to wake any sleeping macs, etc. but he later wrote he'd seen them and was using apple's setup guide PDF), suddenly (I mean over the course of an hour of playing with different setting and trying to get this to work), each of my macs were knocked off the mounted volumes that they had and they no longer could mount with the new aliases I had created.
Now it got worse, all "Shared" connections are being made via the *username.mac" login and I no longer could even see the drives on the G5 when attempting to connect and mount the volumes.
After this, I spiraled into a hell of new Leopard concepts surrounding the availability of mounted volumes from one macintosh to another. Also, one of the two other local machines is still running Tiger so what I am describing affects Tiger clients as well.
After many hours of trying, including BTTMM off and on and a million other things, I discovered in the "Get Info" panel, the "Shared Folder" checkbox on the various volumes and was able to get all but one of the volumes to appear again in the "Shared" connection (or connect to server dialog under Tiger).
The one volume I can't get to connect also happens to be my Time Machine volume for the G5. Nothing I've tried will get this back on-line for other Macs to mount.
I didn't try to turn off Time Machine (I actually ran out of time after all this and now I am work in Ohio while the network is in Chicago so it has to wait until Friday for that test).
User level access control to shared volumes, the Shared Folder option, Back to my Mac and Time Machine are interacting in a very new (and weird) way.
Of course, I searched the web and Apple site to learn much of this but no coherent guide exists yet to achieve a previously easily obtained goal of sharing volumes over a local area network under Leopard.
(I asked for more info on his networking setup and more details on the comments on firewall settings changes)
I use a Airport Extreme Router all off the same gigabit backbone as the macs but it won't really have factored into the problem as it was all done locally. All setups were done using the info from Apple's new guide.
Firewall was set to all possible settings on each machine during debug
A couple of other things are learned was related to people complaining about these drives not appearing on the desk top but through both finder preferences and the trick of dragging the then visible volumes from the desktop to the sidebar device area so that they can be referenced within application open/save dialog boxes (believe it or not, they don't automatically appear there!!!!).
(It may not matter at all, or at best be temporary but I asked if he'd tried repairing/verifying any of the shared volumes (from the host mac) as in the past some readers that had shared drive connect problems (including airdisks) had said a direct connect to a Mac/Repair (using DW, etc.) had helped but that was pre-Leopard.)
After seeing the (big) performance hit when copying to a shared mounted volume (with PPC macs) I avoid it on the G5/10.5 machine here but if anyone has suggestions or has had better results, let me know. Thanks.