Tom,
Your Kernal Parameter values are same as ours.
Broken Pipe error shows that the interprocess communication failed.
Next time when the panic / DB_Vista -24 error occurs, what you may want to do before starting the processes, use lsof command to see whether there are any open files.
One last question, are you routing from Thread A of Process A of SITE1 to another SITE ?
Please let me know what you find.
thanks
Reggie
