That is a hosting issue, not a plogger issue. Tell your IT guy to add a session.save_path directive to the php.ini config file, and make sure it points to a valid directory outside of the web root.
won't that turn of user sessions for all in joomla???
I have joomla in the root and plogger in a folder named plogger in the root and plan to integrate it into joomla??
Should I create a folder in the plogger folder and point to it and also wouldn't it be better to put a separate php.ini file in the plogger folder that will not effect joomla??