Version of Log4J AND Scope of Asynchronous Logging

Hi there!

webMethods 6.0.1 ships with Log4J (to be used with its adapters and possibly for their Audit Logging internal modules).

Does anyone know the version of Log4J being used?

Also, what logging services are provided by webMethods? Are they asynchronous in nature (i.e. do they use something like Java Logging or Log4J internally)?