stsadm -o deactivatefeature -id f6924d36-2fa8-4f0b-b16d-06b7250180fa -url "http://*url of site collection*" -force

stsadm
-o activatefeature -id f6924d36-2fa8-4f0b-b16d-06b7250180fa -url "http://*url of site collection*" -force
 
 
http://sharepoint.stackexchange.com/questions/17040/cant-activate-server-publishing