Release 4 of the jboss-as-7.1.1 package doesn't include the symlink /usr/share/jboss-as/modules/org/apache/santuario/xmlsec/main/xmlsec.jar. This means that applications that require this module fail to deploy.
The workaround is to create the link manually: ln -s /usr/share/java/xmlsec.jar /usr/share/jboss-as/modules/org/apache/santuario/xmlsec/main/xmlsec.jar
Fixed upstream, will be available in jboss-as-7.1.1-5 update. https://github.com/fedora-jboss-as/jboss-as-rpm/commit/8da2593bb2d7015f75ce62e774d23667c162f0cb
jboss-as-7.1.1-6.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/jboss-as-7.1.1-6.fc17
jboss-as-7.1.1-6.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.