You'll note there is a -very- short list of remaining patches to consider for the 2.0 branch, and the logging stderr pool in particular would be good to backport. Because there is no shell, we forcefully kill the stderr pipe logger on pool cleanup before we start launching the new logs. In 2.2/trunk this wasn't a noticeable, we forcefully kill the shell, but the log program it launches keeps running in some cases.
Bill