Michael,
I sensed that in your response.
Thus I was hoping to reinforce your recommendation to log a support case.
As has been historically found in all these Sun Hardware forums through the years,
SunFire Midrange systems are much too complex to discuss in a public discussion thread.
Those who make the original posts never provide enough info,
and never seem to have enough familiarity with the platform.
(perhaps that is why they come here first?)
Sun's techsupport will be the only way to analyze whatever they're experiencing.