Apache Tomcat 7 has created some very important enhancements to logging, and we should exploit them. Please make the org.apache.juli.AsyncFileHandler and org.apache.juli.OneLineFormatter the defaults for shipped conf/logging.properties. These enhancements have been vetted with over 20 releases of Apache Tomcat, let's give them some first class status.
I'm +1 for TC 8 and +0 for TC 7 (not a clear +1 because of user compatibility reasons) Rainer
Fixed in trunk a.k.a. 8.0.x and will be included in 8.0.0-RC2 onwards. An added complication was correctly reporting the thread name when using the AsyncFileHandler.