See my edit for the full path. (got to where my n800 was and corrected myself. ) But if yours looks like mine did ... top will show it chewing up CPU.

Additionally run

#> update-rc.d -f metalayer-crawler0 remove

to permanently shut it off on the next reboot (the proper way to remove it from the rc.X dirs) The problem is that just killing the process doesn't make it go away if you choose to avoid a reboot. You have to rename it and then kill the running process or else it keeps restarting itself.