Filtering out "value provider" console log messages - is there a better way?

By adding this at the start of my jazz java client code

static {
        System.setProperty("org.apache.commons.logging.Log",
                "com.greenelk.WorkitemMessageFilterLogger");
     }

this Class will VERY CRUDELY catch all messages and ignore the irritating ones that spew out in my console

package com.greenelk;

import org.apache.commons.logging.impl.Jdk14Logger;
public class WorkitemMessageFilterLogger extends Jdk14Logger {
private static final long serialVersionUID = 1L;
private static final String filterName = "com.ibm.team.workitem.common";
private static final String[] filterMessagePrefixes = {
        "Value provider com.ibm.team.workitem.shared.common.internal.valueProviders.ScriptAttributeValueProvider for ",
        "Default value provider not found: com.ibm.team.workitem.shared.common.internal.valueProviders.ScriptAttributeValueProvider" };
private boolean filter = false;

public WorkitemMessageFilterLogger(String name) {
    super(name);
    if (name.compareTo(filterName) == 0) {
        filter = true;
    }

}

public void error(Object message) {
    if (passthrough(message)) {
        super.error(message);
    }
}

public void error(Object message, Throwable x) {
    if (passthrough(message)) {
        super.error(message, x);
    }
}

private boolean passthrough(Object message) {

    if (filter && message != null && message instanceof String) {
        String msg = (String) message;
        for (String prefix : filterMessagePrefixes) {
            if (msg.startsWith(prefix)) {
                return false;
            }
        }
    }
    return true;
}

}

I know it's an awful hack, but the messages drive me nuts. My question is : Is there a cleaner way of doing this?