I have not had ringtone issues either. But good news, I got a workaround for the SMS contacts issue that works, and I also have opera 10 working and there are no more internet tab issues
(had an "old" version of htcbookmark) The sms contact workaround is just to enter the contacts last name and then move on to compose, it will autocomplete then. This does not work in last nights kitchen or any ROM yet as I just figured it out today. I will be testing this a bit more, decided to go with 23612 for the official release later today/tonight. MMS is still broken, but that is next on the list.