MPService.exe
(Canon)
Canon MultiPass Service. This service is installed by the Windows NT4/2000/XP drivers for Canon MultiPass multifunctional printers.
Recommendation :
Some versions of the drivers have a buggy MPSERVICE which either consumes excessive amounts of CPU (up to 100% even!) or which shuts down complaining of a "conflicting device" or "device in use". If you experience such a problem download the latest drivers and that should cure the problem. Note : to either uninstall the MultiPass driver, or to upgrade it, you need to first stop the MPSERVICE service or you will not be able to uninstall or upgrade.