I've been posting about this over on RedFlagDeals, and someone suggested this forum as a good place to go for help.
Here's the thread that details what's been going on.
So obviously something must still be residing on the network. But of course I won't have internet when I get home. I'm back in at work tomorrow, so I'll check all the running processes and whatever I can offline at home, and post the results tomorrow.
I'm hoping if I can send some positive results to my ISP, they'll let me back on...