boot USB errors

[Bob Hartung]

Hi all,
  I have a new FC6 install with all updates install with yum.  When I 
installed, I had the
computer hooked to a USB KBM switch but bypassed the keyboard (I thought 
I was having
trouble with my USB keyboard) and used a PS/2 keyboard.  Now I have 
plugged the USB
keyboard back in via the kvm switch and on boot I receive the following:

  usb 1-1.1: failed to resstore interface 0, altsetting 0 (error=-110)

  I get hundreds of these and boot goes no further even with the PS/2 
keyboard plugged back in.

I do have legacy USB support turned on.

Any ideas?  So far this upgrade to FC6 has been a disaster! Upgrade 
failed - had to wipe hd and do
a complete reinstall.  The only saving grace is that I had /home/user 
backed up and I did not have anything
on the machine that I could not reconstitute.

TIA

Bob