I've used 1trial key which was near to expiration and as far as i understood i can continue the trial by requesting a new trial key. Did that , received the new trial key and placed it into /usr/local/lsws/conf/ Then just to double check : 1st verification : /--(root@server02):[/usr/local/lsws/bin]-[pts/0]-(Fri Nov 7 13:52:23 EET 2008) \-> ./lshttpd -V [OK] Your trial license key will expire in 14 days! 2008-11-07 13:52:28.264 [ERROR] [LICENSE] License key operation failure: ERR T.6: Your trial period has terminated. 2nd verification: \-> ./lshttpd -V [ERROR] Failed to find your license key under - /usr/local/lsws/ or /usr/local/lsws/conf/! Seems that it deletes the trial.key file. Help ?