We have the same problem here.
We distributed and install software with SMS2003.
We updated the administrative installation with the SP2 (slipstream). After
that, we did the same with the MUI packs (NLD,DEU,FRA).
When i do a reinstall (with REINSTALL=ALL) Office 2003 SP1 is patched to
SP2, but Access Runtime and the MUI packs are not.