I hate to be asking this, since I know I've seen it for a few years on any sprint aosp builds; that dang persistent voicemail notification.
I know of the re-provisioning dance with an old phone, calling, deleting vm, and reactivating the android phone. Also CM7 had an option to just remove all VM notifications (at least the EVO 4G builds did). I've searched and noticed CM9 doesn't have this option (yet).
Is everyone just living with it? I'm not able to try the re-provisioning method. I found this during my searching; has anyone tried this Epic CM mod on our builds?