Are the services that is in the first post of my link running? Contact Absolute and ask what Enabled but not Activated means and if you can update your BIOS when it's enabled and not activated. Personally, I wouldn't want anything like this in BIOS.
Thank you for convincing me to call that tech support number! It was MUCH less awful than I thought it was going to be!
It was over in about 15 minutes, and the guy was surprisingly nice, though somewhat opaque. It's obvious now why there is so much conflicting advice across message boards about lojack.
He verified the system with my serial number has never had lojack activated, but then went on to say that the only way to be sure was to download a free trial of lojack (!) and then not renew it. I really wanted to quiz him about this, but decided I don't need any Absolute software guys getting ticked at me.
To me, this verifies most of the information in Edward Mendelson's post (linked in my OP) about Computrace and how difficult it is to get rid of. The only thing the tech guy today shot down was the idea of "permanently disabling" it, which is mentioned in post #16 of the above link. You don't get rid of it, you just have to hope it never gets "activated", which is never entirely under user control, though we can make requests.
Machine: Toshiba Portege r705-P41, Dual Boot: MS Windows 7 Home Premium 64-bit; Ubuntu 15.04
CPU: Intel Core i5 460M @ 2.53GHz Arrandale 32nm Technology,
RAM: 4.0GB Dual-Channel DDR3 @ 532MHz (7-7-7-20), Motherboard: TOSHIBA Portable PC (rBGA1288 Socket)
Video Card: Intel HD Graphics Revision 2 1720 MBytes