Question:
On the control panel homepage the pMachine news feed appears. How can I disable this for all users?
Extension:
Non-extension method
Go to Admin -> Utilities -> SQL Manager and run this query:
UPDATE exp_member_homepage SET pmachine_news_feed = 'n'
Users can also turn it off/on themselves under My Account -> Customize Control Panel
NOTE: This query only updates the existing members, it will not change newer members.
To change this for new signups, you can change the default value for the field from l to n. See the thread for more information.