What does this message mean (watchdog timeout DC0)?

[Thomas T. Veldhouse]

Corey Brune wrote:

>It may be hardware related. Have you made any system changes lately?
>How often does this occur?
>  
>
No changes since about last April.  I did move from FBSD 5.x to FBSD 6.x 
(RELENG_6_0) at the time that 6.0 was released.   Nothing since.

I have seen the issue a couple of times this week, but I have not had 
any network problems that I have noticed.  I have noticed this problem 
for years on and off (so to speak) with DC cards.  But lately, I seem to 
be seeing it more.

Tom Veldhouse