This modem bug appears to have hit my TiBook with the installation of OS 10.2.4, but the alleged workaround doesn’t work for me.
I called AppleCare this morning to see if there was anything else I could do. The guy on the phone was working from a script, and had no idea that Apple even knows there’s a problem.
Earth to Apple: Inform your support staff of things you already know about. Sheesh.