The xml snippet is well-formed but it doesn't match the text above.
The documentation says:
"This example show how to configure the RollingFileAppender to roll
log files once per program execution."
but in the snippet rollingStyle is set to "size"
<rollingStyle value="Size" />
shouldnt it be set to "once"?
<rollingStyle value="Once" />
With "Size" LOG4NET wasn't creating a new file everytime I started my program.