I just got -current up on my Sony Vaio (this is a snapshot from around
August 15th), and during boot, I see the following messages:

uhci0 at pci0 dev 7 function 2: Intel 82371AB USB Host Controller (PIIX4) (rev. 
0x01)
uhci0: can't map i/o space

First glance tells me that this message isn't coming from the USB code, but
somewhere deep within the bus_space code (but I could be wrong on that).
I'll take a closer look at it tomorrow, but I was wondering if anyone
else had any bright ideas.

--Ken