Sounds like you are not using the nightly build.
ya, that might be the reason
I managed to slove the import problem by include the annotation jar into the project.
but the structure of the project is a mess.
and I got
ERROR [[/seamapp]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
java.lang.IllegalArgumentException: java.beans.IntrospectionException: Method not found: isJndiName
I searched the forum, seems it's an old issue, anyway, I'll try nightly build and post result, thanks.