OK, maybe it just takes longer in your case. The LAST thing I'd in your case, though, is change anything about your layout! Just don't mess with the customization in any way, otherwise you could lose your old layout for good! The only things I recommend doing are a) waiting for it to resolve itself or b) talk to someone from LiveJournal and get some info about or update on the situation. It's nothing you did after all, I'm guess it has to do with changes they're doing to the whole customization feature itself.. I don't know. But either wait or talk to someone, I am sure it's just temporary! :)