Belated Merry Christmas! < (that'd be Tom's post I'm bumping, check it out!)
Anyway, after the playlists launched last week, some things mysteriously started breaking (as in buttons remaining greyed out etcetera). I was adamant that this was something laying dormant and only exposed itself after I recompiled our javascript library for the playlists and I think I was right.
If you were having problems submitting before, CLEAR YOUR CACHE and try again. Let me know how you get on.
Hope you all had a safe and enjoyable Christmas.