JBoss EAP PicketLink is logging these errors many times: org.picketlink.identity.federation PLFED000201 PLFED000244 PLFED000238

Issue

We have PicketLink security solution in place. However, we have observed a number of PicketLink entries in the server.log that look worrying.
We don't know if they indicate problems or not.

About 340 of these during 24 hours:

2013-04-08 15:56:40,180 INFO  [org.picketlink.identity.federation] 
(http-executor-threads - 18) PLFED000201: Keystore is null. so setting it up

About 100 of these:

2013-04-08 15:49:38,426 ERROR [org.picketlink.identity.federation] 
(http-executor-threads - 99) PLFED000244: Mapping Context returned is null

And also this:

2013-04-08 13:01:54,884 ERROR [org.picketlink.identity.federation] (MSC 
service thread 1-2) PLFED000238: AttributeManager set to 
org.picketlink.identity.federation.bindings.jboss.attribute.JBossAppServerAttributeManager