This is the same issue that I've been hitting, and that requires the
serial console / DDB stuff described in the debugging deadlocks web page
that I pointed you at ...
So far *knock on wood* since adding all of the debugging to one of my
server, none of mine have done it ... but the more ppl
I believe this may be related to the NFS issues mentioned recent, but
hopefully I may have captured enough info to help others troubleshoot..
I got the header of some ps commands.. and when was about to do full listing
of the same ps commands to files.. the machine hung up.
The machine is 6.1 S