To filter out Library updates from debug log simple find the below code in log4j.xml:

<code><Logger name="org.serviio" level="debug" /></code>

and add the below code under it:

<code><Logger name="org.serviio.library" level="info" /></code>

This will filter out __all__ library update messages.  

If you prefer, you can filter out individual library components by adding the following code (this is __instead__ of the above code, not in addition to it), setting the //priority value// to ''debug'' or ''info'' as needed:

<code>
<Logger name="org.serviio.library.local" level="info" />>

<Logger name="org.serviio.library.online" level="info" />

<Logger name="org.serviio.library.dao" level="info" />
</code>