Last modified: 2011-04-14 15:12:56 UTC
Should be simple enough, this would help in cases of move page vandalism targets and other similar scenarios.
After protecting, go to the talk page and click protect. You usually don't want to protect the talk page. It should be kept editable so the protected article can be improved there. I don't think that to be needed nor it seems a good idea to encourage protecting the talk pages.
The same could be said for protecting it manually, this is for MOVE protection. Re-opening bug.