Hi, would be nice if the BufferingForwardingAppender could be configured to flush during idle times. So how about adding: private int m_flushOnIdle; private DateTime m_lastAppendTime=DateTime.Now; virtual public int FlushOnIdle { get { return m_flushOnIdle; } set { m_flushOnIdle = value; if (m_flushOnIdle==0) return; new Thread(() => { while (m_flushOnIdle>0) { Thread.Sleep(m_flushOnIdle/2); if (DateTime.Now - m_lastAppendTime > new TimeSpan(0, 0, 0, 0, m_flushOnIdle)) Flush(); } }){IsBackground = true}.Start(); } } And: override protected void Append(LoggingEvent loggingEvent) { m_lastAppendTime = DateTime.Now; ........ Regards, Günter