deployment-service.sar from jboss-as/docs/examples/varia/deployment-service contains 3 jars, 2 of them are signed.

deployment-service.jar is not signed, I think all jars should be signed
This is not issue which should block release, setting fix version to EAP 521.

Verifying file: jboss-as/docs/examples/varia/deployment-service/deployment-service.sar-exploded/deployment-service.jar
[ERROR] java.lang.SecurityException: jar entry not signed: ...
Verifying file: jboss-as/docs/examples/varia/deployment-service/deployment-service.sar-exploded/commons-collections.jar
Verifying file: jboss-as/docs/examples/varia/deployment-service/deployment-service.sar-exploded/velocity.jar

https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/EAP5/view/Miscellaneous/job/eap-signatures/29/artifact/report.txt