I have made a try to setup ejbca (3.9.2) on the newly available jboss 6.0 (M1).
Compilation goes well, but I encounter "Failed to create a new SAX parser" issue when deploying.
Looking to internet, this error seems to come from a difference between libraries from jboss and those provided by ejbca.
The first exception is:
17:44:47,304 INFO [TomcatDeployment] deploy, ctxPath=/ejbca/publicweb
17:44:47,315 ERROR [JBossContextConfig] XML error parsing: context.xml
org.jboss.xb.binding.JBossXBRuntimeException: Failed to create a new SAX parser
(other exception is of the same type)