After a long awaited update there was one issue for me that I now cannot get to operate. I need to lockout any user below admin (i.e. editor) from editing / managing or adding topics.
Contacted Mark on his "markjaquith.wordpress.com" site. Got a good answer. Only I'm not an advanced user and don't know how to accomplish the advice.
Mark wrote: July 18, 2012 at 2:31 pm
"You’ll have to hook in and change the roles assigned to the ‘wp-help’ custom post type."
See orginal post on that site: 2nd post - Two thirds down the page
I can quite happily follow step by step instructions in editing files.