.ICEauthority update problem

one day you power on your computer and before you login to your system there is an error saying could not update .ICEauthority file and each time you login this error  keeps coming up that drives you insane so what to do you might ask,simple open your file manager  goto view-->show hidden files, right click the file and goto properties and then to permissions and set access as read and write and reboot there will be no more of that nagging error and one more thing all of these things must be done as root.