apache2 error.log

My log “log\apache2\error.log” is full of the following errors, should I worry?

Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  8 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 295
[Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  9 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 296
[Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  10 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 297
[Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  11 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 298
[Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  12 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 299
[Thu Oct 18 20:06:04 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  13 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 300
[Thu Oct 18 20:06:16 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  8 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 295
[Thu Oct 18 20:06:16 2012] [error] [client 192.168.0.2] PHP Notice:  Undefined offset:  9 in /var/www/Admin/webapp/includes/firmwareInfo.php on line 296
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Hi, are you having any problems aside from the log entries? 

My MBL does not power down from webui but only from smartware. I was trying to analyse the logs to detect what is going wrong.