IBM x3655: FBSD 7.0-SNAP 200704 USB keyboard problems

[O. Hartmann]

Hello,

seems I do have a typical problem and don't know how to solv it.
I try to install FreeBSD 7.0-CURRENT SNAP 200704 for AMD64 on IBM x3655 
with two Opteron 22XX CPUs. The ISO CD1 boots well and keyboard reacts 
with the beastie-menu, but after booting into installation menu (showing 
up keyboard layout) keyboard (USB) is not usuable anymore.
Please, can anyone tell me hw to solve this problem?

Thanks,
Oliver