Jim,
Not sure how you feel about Tripp-Lite but supposedly they support auto shutdown with OS X.
From the description of the "InternetOffice 700": HID-compliant USB port enables optional unattended system shutdown without data loss in the case of extended power failure; USB cable included. HID compliant USB port enables integration with built-in power management and auto shutdown features of Windows and Mac OS X. PowerAlert software available via FREE download from es.tripplite.com.
Now, whether it actually works well is hard to say but at least they seem to support it.
Glad all is well.
mike
mike - as of about three months ago (the last time we talked to our tripp-lite rep) the os x features were still being 'fully implemented'. from what i remember, they tried to tell us the full os x compatibility was via serial cable, which coincidentally no mac ships with. the usb implementation was promised as an upgrade, but not yet released.
jim - i understand your frustration with apc, and if i were in your shoes likely wouldn't purchase again. if you do go with the tripp-lite, just make sure you pick it up somewhere with a generous return policy, and of course report back to us!