Je viens de lire ça sur MacFixit:
More on Office font selection bug Craig Freger has submitted additional information regarding the previously reported bug in Office v.X under Mac OS X 10.2.1 where the software picks a font one, two, three, or sometimes four fonts below or above from the one selected on the list of fonts:
"According to a conversation with Microsoft tech support, to fix this you need to trash the following files in user/library/preferences : Office Font Cache (10); Word Font Substitutes; and Word Settings. All of these will rebuild. This solution is only temporary. These files are somehow being corrupted on a regular basis. Microsoft is aware of this problem but has yet to offer a permanent fix."
Donc ce bug de sélection erronée de police est connu. Il faut poubelliser les fichiers Office Font Cache (10); Word Font Substitutes; et Word Settings
du dossier user/library/preferences