Not sure if anyone else has seen this yet, but there is a bug on the 
SunFire v440
that can manifest itself with NetBackup.  Basically, under heavy network 
load
on interface ce0 as well as other I/O and CPU load, the system will 
reset.  There
are no notifications, core dumps or log entries.  The only indication is 
at the
system console through ALOM you will see the following output:

Fatal Error Reset
SC Alert: Host System has Reset 


The bug is "Sun Alert ID: 57618" on SunSolve.  The work around is to not
use the interface.  Just spreading the word so others don't have to go 
through
what I had to.


Thanks
Peter DrakeUnderkoffler