O ar do Macbook continua sendo desligado aleatoriamente

Question

Estes são os meus logs do sistema. Por favor, ajudem.

May 26 12:17:30 Akshays-MacBook-Air com.avast.proxy[385]: Error
connecting to 77.234.43.23: Operation timed out
May 26 12:17:34 Akshays-MacBook-Air com.apple.xpc.launchd[1]
(com.apple.quicklook[717]): Endpoint has been activated through legacy
launch(3) APIs. Please switch to XPC or bootstrap_check_in():
com.apple.quicklook
May 26 12:17:40 Akshays-MacBook-Air auditd[104]: Got low space trigger
May 26 12:17:40 Akshays-MacBook-Air auditd[104]: auditd_read_dirs():
all audit log directories over soft limit
May 26 12:17:40 Akshays-MacBook-Air auditd[104]: renamed
/var/audit/20160526064710.not_terminated to
/var/audit/20160526064710.20160526064740
May 26 12:17:40 Akshays-MacBook-Air auditd[104]: New audit file is
/var/audit/20160526064740.not_terminated
May 26 12:17:40 Akshays-MacBook-Air _usbmuxd[721]: audit warning: allsoft
May 26 12:17:40 Akshays-MacBook-Air _usbmuxd[722]: audit warning: soft
/var/audit
May 26 12:17:40 Akshays-MacBook-Air _usbmuxd[723]: audit warning:
closefile /var/audit/20160526064710.20160526064740