HEADSUP usb2 (usb4bsd) to become default in 2 weeks.

[Pegasus Mc Cleaft]

I believe that the Prolific USB serial adapter is broken on AMD64.  I tried
one of the adapters on my machine and no matter what serial speed I was
selecting with cu it would come back with an error stating the speed was
unsupported. I moved the adapter to a 8-current machine (i386) with the usb1
stack and everything worked fine.

Peg