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Thanks for asking.
Remote Buddy itself doesn't contain any code that would be able to
cause that effect. The Wii Remote can't cause this either. This
strongly looks like a hardware or OS X problem.
Oh yes, I did not mean to imply otherwise. To me it stinks of a bug in apple's USB stack (since it's not just bluetooth that dies, all USB stops working). The kernel obviously ends up in some horked state, such that the machine needs to be forced off by holding the power button.
I believe this line to be the key to the solution:
* D-Link DMB-120 (Rev B3) USB bluetooth adapter, connected via a 4-
port USB hub.
Why?
a) You don't use an Apple Bluetooth adapter.
I didn't know there was one! They definitely don't seem to sell one anymore:
on store.apple.com--
Search results: bluetooth usb adapter
No items were found that matched your query.
But the real reason is that I have two that I've used on and off for years with various macs. Now they were mostly gathering dust in a drawer since all my macs except for my mini (well, and my SE-30 ;) have bluetooth built-in.
(BTW: do
you mean the DBT-120 by any chance? That model is specified for USB
1.1 and USB 2.0 by D-Link. I couldn't find any reference to a DMB-120
anywhere on the web, though).
Yes! Sorry for the misinformation.
b) You connect the Bluetooth adapter through a USB hub. Try connecting
it directly to a USB port on your Mac Mini.
I think this may have been the problem, in fact, and I'm ashamed not to have thought of it myself. The reason I had it on the hub to begin with was because the mini is inside a cabinet, and I wanted the best bluetooth reception possible (the snakes to the outside of the cabinet).
I connected the adapter directly to the back of the mac mini. I don't want to jinx it, but... it hasn't stopped working yet :) So, perhaps, success!
itself. I strongly expect that the OS X USB stack (or an instance of a
hub class of it in the kernel) is hanging here, as essentially your
entire problem comes down to a USB problem. If USB stops working, the
USB IR receiver, the USB keyboard and mouse as well as the USB
Bluetooth stick (and thus also the Bluetooth stack) - all devices you
mentioned - no longer have any means of communication and will
naturally stop working, too. Your mention that screen sharing still
works adds to that theory.
Yes, exactly what I thought as well. And the fact that it seems to work well so far without the hub would point to power consumption, probably. My guess is that the adapter barely gets enough power and randomly it doesn't, causing it to do something the USB stack doesn't expect, causing the hang.
Thanks for the quick help!
Dan