FC4: zip-drive not working

[H.Breimer]

Last month on FC3 I made my updates on a zip-drive that has always
worked.
Now, moved over to FC4, no luck.

"Unable to mount the selected volume.

 mount could not determine the
 filesystem type, and none was specified"

lspci, lshal, fstab, udev and nautilus show signs of recognizing my 
IOMEGA ZIP 100 ATAPI.

google did not help. For bugzilla I would not know where to look.

Hint anyone?
thx Henk