syslog error

[0000-Admin at UCBVAX.BERKELEY.EDU]

I'm getting the message "ec0: late collision" in my syslog, and I have no
clue what it means.  Everything's been running ok for a while now, and I'm
not noticing any particular problems in how the system runs even with the
sudden appearance of this message.  Maybe it's a silly question, but I couldn't
find anything relevant in a check through the man pages...
Thanks in advance,
Eugene Gholz
(eugholz at athena.mit.edu)