title: log4net creates new log every minute
body: <p><code>log4net</code> 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. </p>
  
  <p>This is from my <code>app.config</code> file:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;appender name="file" type="log4net.Appender.RollingFileAppender"&gt;
    &lt;file value="C:\\Logs\\log2_"/&gt;
    &lt;rollingStyle value="Date"/&gt;
    &lt;datePattern value="MMdd_HHmmss.\tx\t"/&gt;
    &lt;staticLogFileName value="false"/&gt;
    &lt;appendToFile value="true"/&gt;
    &lt;maximumFileSize value="500MB"/&gt;
    &lt;layout type="log4net.Layout.PatternLayout"&gt;
      &lt;conversionPattern value="%date %-5level %message%newline"/&gt;
    &lt;/layout&gt;
  &lt;/appender&gt;
  </code></pre>
  
  <p>What is the error here?</p>