hi i'm using log4net for logging my website. Every day a new file is created like "filename.log24-06-2009"

this is the code in the web.config file:

 <log4net>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="App_Data\Missioni.log" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <!--<datePattern value="yyyy-MM-dd" />-->
      <maxSizeRollBackups value="5" />
      <maximumFileSize value="5MB" />
      <layout type="log4net.Layout.PatternLayout">
        <header value="[Header]&#xA;" />
        <footer value="[Footer]&#xA;" />
        <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingLogFileAppender" />
    </root>
  </log4net>

How can i do for use a unique log file?

thanks