User blog comment:Toughpigs/Create a new article - feature update launching next week/@comment-161697-20100204171845

Its been patched to not affect Forum namespace pages, meaning createbox/inputbox (and preloads) should work ok now. If your wiki uses preloads for other namespaces in anyway, or uses createbox to make pages in other namespaces, please contact us, and we can consider disabling the extension for that wiki.