A session hang is observed when using JDK 7 Update b18 on Mac with WLS 1212-dev kit. Using a simple HelloWorld web app, long delays are observed when requesting the JSP after its first use. The request can take 10s of seconds to return. However, if the request is canceled, then quickly tried again it succeeds. This doesn't happen with the latest JDK 6 Update 31 on Mac OSX 10.3, nor does it happen with JDK 7 Update 4 on other OSes.