If I terminate a query with count() instead of execute(), the result cache settings are ignored and the SQL query is always executed.

Test script:

// execute once
$query = Doctrine_Query::create()
  ->useResultCache(new Doctrine_Cache_Apc())
  ->select('b.title')
  ->from('Blog b')
  ->count();
// execute a second time
$query = Doctrine_Query::create()
  ->useResultCache(new Doctrine_Cache_Apc())
  ->select('b.title')
  ->from('Blog b')
  ->count();
// this should not execute a new SQL query, yet it does

If Doctrine_Query::count() ignores cache settings n purpose, this should at leat be mentioned in the documentation.