I found a issue due to Minera 0.3.5 with Raspberry B+ ( New version with 4 USB Ports )
When i power off ( from minera's web page or SSH then poweroff or halt ), after 10 to 15 second, Pi will auto poweron again
How ever, I test 2014-06-20 img form raspberrypi.org, not having this issue, and i manually install minera 0.3.5 and still not having this issue
I can't understand when you have the issue. But probably it's only an RPI config issue (wake up on lan?), nothing to do with Minera.
Now it's happens every time i try to shutdown the Pi no matter what IMG i use and the way i use ( from minera's UI or poweroff or halt ), and i test 6 of Raspberry Pi B+, it's all same! Is there anyone else use Raspberry Pi B+ here?
I think it's an RPI B+ issue, please check:
http://raspi.tv/2014/just-how-awesome-is-the-raspberry-pi-community-fixing-the-b-wont-shutdown-issueSolved, i change a TF card and it won't happen again, old one is SanDisk 4G ( black, low-end ) , new one is SanDisk 8G ( red, high-speed )
And i think the link you gave talked about another issue ( use finger to touch GPIO to cause poweron ), but it's related to my issue, i can confirm that before i change the TF card, it happens, and after i change the TF card, it won't happen again too!