Witam w error_log zgłaszają mi się następujące błędy

[Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined index: userpanel_dir in /usr/share/lms/lib/menu.php on line 493 sh: /hostname: No such file or directory [Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined offset: 0 in /usr/share/lms/lib/common.php on line 94 [Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined index: HOSTNAME in /usr/share/lms/lib/common.php on line 108 [Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined index: popup in /var/www/htdocs/lms/index.php on line 204 [Sat Feb 11 22:16:25 2006] [error] PHP Notice: unserialize(): Argument is not a string in /usr/share/lms/lib/LMS.class.php on line 2982 [Sat Feb 11 22:16:25 2006] [error] PHP Notice: unserialize(): Argument is not a string in /usr/share/lms/lib/LMS.class.php on line 2983 sh: /hostname: No such file or directory [Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined offset: 0 in /usr/share/lms/lib/Sysinfo.class.php on line 105 sh: /uname: No such file or directory sh: /who: No such file or directory [Sat Feb 11 22:16:25 2006] [error] PHP Notice: Undefined offset: 1 in /usr/share/lms/lib/Sysinfo.class.php on line 190

jak mam ich się pozbyć ??

dziekuje i pozdrawiam