------ art_3840_3928925.1151271466329 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Once again the story of poor man responding to its own question: It appears that windows does not implement this functionnality at this time. So the value found for last_logoff is always 0 ! See http://msdn.microsoft.com/library/default.asp?url