Powerdown initiated after kvm switch

Oddest thing happened today -- Switched over the kvm to my unraid box and it initiated a powerdown sequence. Any ideas?

System came back with no problems and a clean shutdown. No SMART errors and disk status is ok across the board it seems.

Here's an exert form the syslog (attached):

Apr 18 15:34:14 Olympus kernel: usb 4-3: new full speed USB device using ohci_hcd and address 2

Apr 18 15:34:14 Olympus kernel: usb 4-3: configuration #1 chosen from 1 choice

Apr 18 15:34:14 Olympus kernel: hub 4-3:1.0: USB hub found

Apr 18 15:34:14 Olympus kernel: hub 4-3:1.0: 4 ports detected

Apr 18 15:34:14 Olympus kernel: usb 4-3.1: new low speed USB device using ohci_hcd and address 3

Apr 18 15:34:14 Olympus kernel: usb 4-3.1: configuration #1 chosen from 1 choice

Apr 18 15:34:14 Olympus kernel: input: Logitech USB Multimedia Keyboard as /devices/pci0000:00/0000:00:12.1/usb4/4-3/4-3.1/4-3.1:1.0/input/input3

Apr 18 15:34:14 Olympus kernel: generic-usb 0003:046D:C317.0001: input,hidraw0: USB HID v1.10 Keyboard [Logitech USB Multimedia Keyboard] on usb-0000:00:12.1-3.1/input0

Apr 18 15:34:14 Olympus kernel: input: Logitech USB Multimedia Keyboard as /devices/pci0000:00/0000:00:12.1/usb4/4-3/4-3.1/4-3.1:1.1/input/input4

Apr 18 15:34:14 Olympus kernel: generic-usb 0003:046D:C317.0002: input,hidraw1: USB HID v1.10 Device [Logitech USB Multimedia Keyboard] on usb-0000:00:12.1-3.1/input1

Apr 18 15:34:14 Olympus kernel: usb 4-3.2: new low speed USB device using ohci_hcd and address 4

Apr 18 15:34:14 Olympus kernel: usb 4-3.2: configuration #1 chosen from 1 choice

Apr 18 15:34:14 Olympus kernel: input: Logitech USB Laser Mouse as /devices/pci0000:00/0000:00:12.1/usb4/4-3/4-3.2/4-3.2:1.0/input/input5

Apr 18 15:34:14 Olympus kernel: generic-usb 0003:046D:C069.0003: input,hidraw2: USB HID v1.10 Mouse [Logitech USB Laser Mouse] on usb-0000:00:12.1-3.2/input0

Apr 18 15:34:15 Olympus kernel: usb 4-3.3: new low speed USB device using ohci_hcd and address 5

Apr 18 15:34:16 Olympus kernel: usb 4-3.3: configuration #1 chosen from 1 choice

Apr 18 15:34:16 Olympus kernel: input: No brand 4 Port KVMSwicther as /devices/pci0000:00/0000:00:12.1/usb4/4-3/4-3.3/4-3.3:1.0/input/input6

Apr 18 15:34:16 Olympus kernel: generic-usb 0003:10D5:55A4.0004: input,hidraw3: USB HID v1.10 Keyboard [No brand 4 Port KVMSwicther] on usb-0000:00:12.1-3.3/input0

Apr 18 15:34:16 Olympus kernel: usbhid 4-3.3:1.1: couldn't find an input interrupt endpoint

Apr 18 15:34:27 Olympus logger: Powerdown initiated

syslog-20120418-153517.zip