It sometimes takes us a while to get through things, especially if we have something else going on or if there's something problematic ahead of it in the queue, both of which have been the case recently.
We download every file uploaded to the resource centre and install it according to the author's instructions. If the instructions are unclear, absent or just entirely wrong we'll reject it. Then we inspect the content itself to make sure it's of a reasonable quality and that it's not plagarising anyone else's work. If all is good we approve it - though obviously, this can take a little while, especially with a lot in the queue