I was checking through a text message conversation in Ovi Suite (beta) and noticed that a couple of recent messages were missing. After checking that I had not deleted the missing messages from my phone I noticed that they were MMS.
So, Ovisuite's message conversation list does not include MMS. I thought to myself "maybe it'll get included at a later date", and I thought "I wonder if there's been an update recently", and I checked and said to myself "there has!".
Downloading Nokia_Ovi_Suite_0_4_154_0_ALL_web.exe (18 sep 09) now.
...I bet it still doesn't support MMS in the conversations though...