log4net creates new log every minute
===

`log4net` in my project creates new log file every minute. I would like to have just one file per instance of my application, but every instance that runs should create new log file. 

This is from my `app.config` file:

<!-- language: lang-xml -->

    <appender name="file" type="log4net.Appender.RollingFileAppender">
      <file value="C:\\Logs\\log2_"/>
      <rollingStyle value="Date"/>
      <datePattern value="MMdd_HHmmss.\tx\t"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <maximumFileSize value="500MB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %message%newline"/>
      </layout>
    </appender>

What is the error here?