Does jnp_client.jar rely on log4j.jar?

I am recieveing the following message, when I am trying to remove log4j as a dependency of my applet.
If so why log4j.jar and not the commons logging api?

java.lang.NoClassDefFoundError: org/apache/log4j/Priority

at org.jnp.interfaces.NamingContext.(NamingContext.java:92)

at org.jnp.interfaces.NamingContextFactory.getInitialContext(NamingContextFactory.java:42)

at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)

at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)

at javax.naming.InitialContext.init(Unknown Source)

at javax.naming.InitialContext.(Unknown Source)

at org.adligo.persistence.ModuleUtils.runEJB(ModuleUtils.java:109)

at org.adligo.persistence.ModuleUtils.run(ModuleUtils.java:65)

at org.adligo.persistence.ClientModule.run(ClientModule.java:88)

at org.adligo.persistence.ClientModule.setUpServer(ClientModule.java:64)

at com.adligo.systems.ae.AEApplet.setUpMe(AEApplet.java:105)

at com.adligo.systems.ae.AEApplet.setUp(AEApplet.java:96)

at com.adligo.systems.ae.AEApplet.jbInit(AEApplet.java:70)

at com.adligo.systems.ae.AEApplet.init(AEApplet.java:52)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)