on page... http://tomcat.apache.org/connectors-doc/generic_howto/workers.html in the "A sample worker.properties" section the sample creates a worker connecting to locahost instead of localhost (note the missing l). so it caused a bit of a headache trying to track down why it couldn't resolve the host. closer inspection revealed the typo. please fix this on the documentation site. thanks!
Thanks for reporting and sorry for the inconvenience. This has been fixed in r893034 and will be part of version 1.2.29.