>>1. Could anyone enligthen me the attributes of some of the nodes that
were
changed automatically without human intervention?<<

The IP address associated with the node changed. To say it a different
way, the node connected from a different IP address than the one TSM had
stored for it. In the example you gave, it looks like the stored ip
address was null and TSM stored a real IP address.

David Ehresman
University of Louisville