Jetty strange traces?

While I was configuring log4j, for a while I set to DEBUG Jetty 5.0
traces.
During Jetty startup I found:

2004-09-21 17:26:51,169 DEBUG XmlConfiguration  - new class
org.mortbay.http.SocketListener
2004-09-21 17:26:51,185 DEBUG XmlConfiguration  -
SocketListener0@xxxxxxx:0.setPort(class java.lang.String 8081)
2004-09-21 17:26:51,185 DEBUG XmlConfiguration  - IGNORED 
java.lang.NoSuchMethodException:
org.mortbay.http.SocketListener.setPort(java.lang.String)
        at java.lang.Class.getMethod(Class.java:986)
.....

2004-09-21 17:26:51,201 DEBUG XmlConfiguration  - IGNORED 
java.lang.NoSuchFieldException: TYPE
        at java.lang.Class.getField(Class.java:919)
        at
org.mortbay.xml.XmlConfiguration.set(XmlConfiguration.java:309)

...

And so on.

Is it normal getting these errors? At first glance it seems like that
XML configuration is failing but everything works fine.

Thanks

--
Davide


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