When you run twiddle after applying the JBAS-1955 patch we still get the following error:

./twiddle.sh get "jboss.web:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/" logger
11:10:52,929 ERROR [Twiddle] Exec failed
java.io.NotSerializableException: org.apache.log4j.Level
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
......