I have different ring tones for different people, and I've noticed that since the update, it just kind of seems to play what ever ring tone it want's. Some time it's the right one, sometimes it's the default, sometimes it's completely random.
It even seemed to change my alarm tone, but i think i have that back and set right.
Has anyone else had this same issue? I haven't tried a reboot yet if you think that'll help.