.. perhaps someone can shed light on this. I recently moved my remaining Pro at home to a slightly different location in the same room. I booted it up, did some stuff and turned it off before I left home for a few days. I came back to find the fans on full blast on that machine. The build-up of dust on the front panel indicates that it had been on in that state perhaps for almost all of the time that I'd been gone. While the 'Pro' Apple hardware have easily been the least reliable pro-use machines I have had so any oddities are not entirely unsurprising, I'd still be interested to know why this was caused and if it's likely to happen again. As a precaution I'm either turning the socket off before I leave, or if I forget, I log into my house and cut power to the Pro's socket remotely. As far as I'm aware, no firmware changes were made in recent updates at least as far as this Pro was concerned. Thanks in advance for any insights you might be able to provide.