I don't see any war attached. Was it deleted?
That application deploys fine for me without any errors (after I setup the security-domain and the datasource).
Do you use jboss-as-web or the full version?
Finally I found it: there was a file from the driver jar in the folder deployments: mysql-connector-java-5.1.15-bin.jar.failed.
However, in the log appeared:
Newly corrected services:
service jboss.jdbc-driver.mysql-connector-java-5_1_15-bin_jar (now available)
So I thought this is not a problem.
I deleted the .failed file and restarted the server and it works.
Thanks