Gaaah! I didn't notice this!
What 's the reason for making a new wiki and leaving the old one editable? o_O
What happens with all the forum links? Are you going to rename the new /mediawiki to /wiki eventually or will all the links remain broken?
Why is this taking so long? If you make such a big move, it should never take more than a few days(or not at all). Especially not when content is editable on both wikis.
Why did you assume that the wiki editors read the forums?
Why did you not put a huge red notice on the frontpage of the old wiki that it shouldn't be edited anymore?
Have you noticed how many people have been editing the old wiki?

[edit] I really understand if you couldn't find the time to undertake the move, we all have other things to do beyond multiboxing. However, isn't it better to just cancel the whole move or restart it all over? (but properly)