After upgrading to Jaguar, my TiBook refused to mount my workstation’s disks. The error message was a lot less than helpful: “Connecting to afp://… An error has occurred (error = -1028).”
I couldn’t mount the TiBook from the desktop machine, either, because I’d made the unwise decision to format the laptop’s filesystem as UFS rather than HFS+, and OS9 (the desktop’s OS) won’t read UFS disks. This means I had two computers that wouldn’t talk to one another. Basically I was suffering from the inverse of Metcalf’s Law: the value of my home network had decreased in proportion to the square of the number of nodes that were refusing to join. Or, assigning values, 12 = 1.
While on hold with Apple’s tech support group, I poked more at the laptop, assuming that the solution was something simple. And, I soon found, it was: within the network prefs, I’d disabled AppleTalk by mistake. Re-enabling it made my network happy once again.
Still: lousy error message, no?