Erro: start! -[b]May 14 12:51:13 WARNING[5384]: pbx.c:3763

Hello everbody!,

    I have a problem in my asterisk, is this:

Cannot obtain load average on this system. ‘maxload’ option disabled.
Parsing /etc/asterisk/logger.conf
May 14 12:51:13 NOTICE[5384]: cdr.c:1193 do_reload: CDR simple logging enabled.
May 14 12:51:13 WARNING[5384]: pbx.c:3763 ast_merge_contexts_and_delete: Requested contexts didn’t get merged
May 14 12:51:13 NOTICE[5384]: app_conference.c:68 load_module: loading app_conference module [ $Revision: 1.22 $ ]

What is the problem, anybody know?

Thanks for any help!!!