Limiting logs

How can I limit log output ?

I found two log4j.xml files:

./WEB-INF/classes/jetbrains/charisma/main/log4j.xml
./WEB-INF/classes/log4j.xml

I've managed to block most output (limiting threshold to WARN). But i'm getting :

20:55:35,851 ERROR [STDERR] Feb 2, 2010 8:55:35 PM jetbrains.mps.gtext.runtime.TBaseBuilderContext getText
INFO: There is no placeholder for content [__JAVASCRIPT__]

putting following in ./WEB-INF/classes/jetbrains/charisma/main/log4j.xml does not help :

<category name="jetbrains.mps.gtext.runtime">
<priority value="FATAL"/>
</category>