What means about Non-local Process blocks cleaned out in RACalert log

Hi Experts,
We have 4 nodes oracle 11.1 RAC in redhat5.1.
I saw lots of message about Non-local Process blocks cleaned out in alert log files today.
such as
Tue Sep 8 16:31:04 2009
Reconfiguration started (old inc 18, new inc 20)
List of nodes:
0 1 2 3
Global Resource Directory frozen
Communication channels reestablished
* domain 0 valid = 1 according to instance 0
Tue Sep 8 16:31:04 2009
Master broadcasted resource hash value bitmaps
Non-local Process blocks cleaned out
Tue Sep 8 16:43:46 2009
LMS 0: 0 GCS shadows cancelled, 0 closed
Tue Sep 8 16:43:46 2009
LMS 1: 0 GCS shadows cancelled, 0 closed
Set master node info
Submitted all remote-enqueue requests
Dwn-cvts replayed, VALBLKs dubious
All grantable enqueues granted
Does some expert above message for me?
Thanks
Jim

Thanks- good observation.
Unusual, perhaps, but it is what we need in our setting. And- allegedly this is supported / encouraged based on my understanding of the OS X Server docs. I don't have any control over the AD server (since it's in the university-level IT management's hands) but I -do-, of course, have control over my own server. So I just want to use their authentication (and save my students / lab folk the trouble of having multiple logins, etc).
You make a good point / observation / point-of-debuggery. Indeed, if I set the client machines to use -only- the main campus AD server (and thus allow logins from everyone on campus) it works first time. So it is some interesting interaction betwixt the Mac OS Server and the client methinks. In fact, across campus, all the 'public' machines are simply bound to the AD server and you can just log in that way.

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