Hi Peter, when you're using Apache HTTP in front to serve static content and Tomcat is serving JSP / Servlets only, using the APR won't give you any advantage (AFAIC).
However, some ppl are using Tomcat only (running on port 80 / 443 with f.e. JSVC): Then, according to my brain-cells, the APR will increase performance serving the static content. The APR actually is also used by Apache HTTPD - meaning you'll get the same performance serving static content via Tomcat only using the APR as compared to a Apache HTTP-in-front / Tomcat-combination. Cheers Gregor -- what's puzzlin' you, is the nature of my game gpgp-fp: 79A84FA526807026795E4209D3B3FE028B3170B2 gpgp-key available @ http://pgpkeys.pca.dfn.de:11371