The Dock processor uses 100% CPU

hi, can someone please help me? my computer for the last 2 dayshas been heating up and the battery wasn’t as long as it should, so i checked"activity monitor" and the Process name "Dock" is using100% CPU. i tried quitting the process but it just reappears, i triedrestarting/shutting down and it just comes back to 100%CPU usage as soon as itturns on before i turned on anything. So does anyone know how to fix thisproblem?
i dont have any start up programs, but i do have "dropBox/logMeIn/iStatpro" on my menu bar.

I did check google and the discussions on the apple website but couldn’tfind anything useful. i’ll appreciate any help that you can give me thanks.

thanks,