Install maemo-controll from (i think) maemo-extras. It will add additional control panel options. Go to control panel, launch Services and you'll se a list of running tasks. Clicking on Hide system services will show all running services on the tablet. Taping on Running will togle the process on/off, removing the checkmark in front of the service will prevent it from running at boot. It's a good place to disable metalayer crawler if you don't need it.

Be careful what you disable, you might render your tablet unusable. Check and double check that you know what a process does, before you disable it.