No, the Mediator works fine when I boot OS3.9. In the end I made a copy of a Workbench disk and installed the Mediator drivers on to it properly. Then PCIInfo correctly reported all of the cards. I then incorporated fx's network bootdisk in to the Workbench disk, booted from the disk, started AmiTCP, and hey presto I can map drives with smbfs to my MacBook from the floppy :-D
--
moto