sounds strange but i got notification in IM/SMS as "Voice Mail" and in Phone app as "Voicemail". But only one of them at any incidents. What i mean i that i get one of those as indicator as well as notification tone (like SMS) and flashing LED (Blue). I'm on US Tmobile.
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...