I'm facing a small but irritating issue over the past couple of days.
My desktop, at random intervals, pops up the "quit" options (as thought the quit/poweroff button has been pressed.)$ dmesg | tail
Aug 28 22:32:30 desktop -- MARK --
Aug 28 22:52:30 desktop -- MARK --
Aug 28 22:56:44 desktop gnome-power-manager: (user) GNOME interactive logout. Reason: The power button has been pressed.
Aug 28 23:12:30 desktop -- MARK --
Aug 28 23:15:39 desktop gnome-power-manager: (user) GNOME interactive logout. Reason: The power button has been pressed.
Aug 28 23:32:30 desktop -- MARK --
Aug 28 23:42:43 desktop gnome-power-manager: (user) GNOME interactive logout. Reason: The power button has been pressed.
The poweroff button (on the tower case) has not been pressed, and i've checked it for shorts, getting stuck etc, it's in perfect condition, no problems.
I usually leave the system on 24/7, and, after a long period (6-12 hours) these dialogs seem to be "queued" up, one after another, as though the power button has been pressed multiple times. (And, dmesg shows that the power button seems to have been pressed, at random intervals). I have to press ESC to cancel them one by one. But I'm dead sure that no one has pushed the power button. It also happens when I'm working, suddenly the screen goes dark (not "not responding" dark), and the quit options dialog box pops up on the screen. I can dismiss it with cancel and everything continues to work fine.
A point I suspect, but have not yet had the time to confirm it 100%, is that this is happening only when Transmission/Deluge is active; otherwise it doesn't seem to have a problem (Eg, I ran it without any torrent clients for three-four hours, and received no button press events).
Live CD works fine, but then again, I didn't run any torrent clients at that time.
a) Is anyone else facing something similar?
b) Is it possible that I've opened up some esoteric port access in the computer that allows a remote shutdown signal to be sent? (I'm behind hardware firewall and iptables, no remote access).
c) Who'm I gonna call? The GhostBusters?
All suggestions, comments and requests will be scrutinized and appreciated.