Just when I was confident my Macintosh problems were behind me, I installed Apple’s OS X 10.4.6 update. And the computer promptly became un-usable. It’s glacially slow (several minutes to open an application or do virtually anything else), the Dock no longer works, and so on. Once again, I envy those who find OS X more stable than Windows. (And yes, I’ve taken the machine to the Apple Store — they couldn’t find anything.)
So here I am, posting from a backup Windows machine, and not looking forward to another period of debugging and reinstalling things to get my Powerbook working.
UPDATE: Thankfully, with some help from MacFixit the machine seems to be working normally again. Still, this shouldn’t be so hard, not on a platform that prides itself on stability.