USB hardware compatibility?

Hi All,

We've been having a hard time installting OpenBSD 3.5 using either USB 
floppy drives or USB CD drives - the installation will just freeze 
during the install kernel bootup. The boot floppy works fine on other 
systems, but using a variety of USB floppy drives still can cause it to 
hang with the Brick. Tried a variety of BIOS setting configurations, 
none of which seem to work.

Is there a BIOS update available that allows the system to communicate 
with more USB devices, or is this a known issue? Anybody have a known 
good hardware list?

Thanks,
Chris