newline statment does not works in Log4Net under Vista Guest account

Question

Hi I'm using Log4Net (1.2.10.0) for logging in my application. It's working fine - till I run it on Vista SP2 under Guest user. The log file does not contains a newline characters - all log is a single line. This is not happen when I run the application as regular or admin user. Only in case of built-in guest account.

Any ideas?

The configuration is as following:

<appender name="clientRollingFile" type="log4net.Appender.RollingFileAppender">
      <file value="C:\users\public\client.log" />
      <appendToFile value="true" />
      <maximumFileSize value="100KB" />
      <maxSizeRollBackups value="5" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %logger [%type{1}] [%ndc] - %message%newline" />
      </layout>

Thank