Something is wrong with the fxp network driver

I am having a problem with recent builds of -current with the fxp
driver.  A couple of days ago, the 6 machines in my cluster with fxp
interfaces all died at about the same time with fxp timeout errors.  The
machines with 3Com xl interfaces kept on going. Today, I am observing
that the throughput is about half of what I am seeing on my machines
with a 3Com xl interface.  Is anybody else observing this?  What other
information do I need to provide?

Thanks.

-- 
Glenn Johnson
USDA, ARS, SRRC			 Phone: (504) 286-4252
New Orleans, LA 70124		e-mail: gjohnson_at_srrc.ars.usda.gov