System has experienced overutilized CPU since upgrading Monday night from build 8888.   Support said a file restructure was expected and that it would create indexing overhead for awhile.    System is still maxed out and I finally checked the indexing log.   My own account has been reindexed 29 time today.    Log set to detailed, but no errors visible.   Some entries finish with Reindex: True for no apparent reason, but I see some entries where the user is immediately reindexed even when the result is Reindex: False

So far today:   7014 indexing operations done, 6716 ended with reindex false, 298 ended with reindex True.  We have a little under 2000 user accounts, plus some aliases and maililng lists.