Every 5 seconds or so you are getting a message of the form:
Oct 3 09:55:51 NasTerminal1 kernel: usb 9-2: new low-speed USB device number 15 using uhci_hcd
Oct 3 09:55:51 NasTerminal1 kernel: hid-generic 0003:0764:0501.0011: hiddev96,hidraw2: USB HID v1.10 Device [CPS EC850LCD] on usb-0000:00:1d.3-2/input0
Oct 3 09:55:59 NasTerminal1 kernel: usb 9-2: USB disconnect, device number 15
Do you know what device this is?