I finally got my EFIKA fired up last night.
The Radeon 9250SE I had lying around worked fine. However, the EFIKA was VERY picky about what keyboard it would use.
A PS/2 keyboard with a USB adapter would type one or two words then lock the system solid.
A KeyTronic USB keyboard (for a Mac) would only recognize the ENTER key.
I finally dug out a Sun Type7 USB keyboard and it worked flawlessly.
It may be a power issue; I'll try running the other keyboards through a powered USB1.1 hub and see if that makes a difference.