SearchIndexer.exe does all the indexing stuff on your Vista machine. Not bad at all it is not possible to schedule when the indexer is running as it was able using MSN Desktop Search. E.g., there you have been able to send the indexer to sleep for a 10, 20 or 60 minutes or to avoid running the indexer whilst working on the machine. it looks like the only way to calm the machine down is by switching of the service at all. Another work around I am trying right now is to got to Control Panel / Power Options and choosing the High Performance Change power plan settings. There chose Change advanced power settings Search and Indexing values to Power Saver or Balanced. This should lower the indexing effort of the Vista Search significantly.