Just got my Incredible a week ago. I've noticed that the volume level of the ringtone is much lower than the volume of the notification tones. I loaded an mp3 as well and assigned it as the ringtone with the same result.
The notification tones are much louder than the ringtones. So much louder that I have to keep the ringer volume down enough that the actual ringtone is very quiet.
Has anyone else noticed this?