Some success at last, my 10,000 errors each day are history!
After LOTS of digging and head scratching, it turned out to be a corrupted Health Monitor and/or Symantec Mail Security for Microsoft Exchange that were wreaking such havoc.
I first removed SMSME and than rerun 'Set Up Monitoring & Alerts' wizard choosing 'Reinstall Monitoring Features' resetting Health Monitor to defaults. It was something in WMI's error log that got me to thinking 'Performance Provider' and Health Monitor, although noting like that ever showed up in the appl log errors.
For those with similar issues, these web pages are really useful:
WMI -
http://blogs.technet.com/askperf/archive/tags/WMI/default.aspxHealth Monitor -
http://w.e-e.com/iwdKXpSymantec SMSME -
http://service1.symantec.com/support/ent-gate.nsf/854fa02b4f5013678825731a007d06af/58b30d844e29d4a78825733f006cb0a2?OpenDocumentThanks for your Suggestions Cris! .... Until next time :)