I would say my payments are taking much longer David. Like you, I would get them normally, until a month or so ago, on the day they were released. The last payment I received was 'released' on 12th October and I received it on the 17th. My next payment from a guest who stayed with me on 13-15 October has not even been released yet. I am frustrated because:
1. there was no prior warning about the change
2. when I messaged airbnb they said my bank, Santander, was at fault - I said I make pretty much instantaneous transfers all the time!
3. airbnb wouldn't admit they had changed anything, but I can see from my bank statement the account has changed
4. now I don't really know when the money is going to arrive
Generally I have been super impressed with everything at airbnb in my almost 3 years as a host, but this situation as been poorly handled. The messages have a very scripted feel so you don't feel that anyone is actually listening to what you are saying.