Error log showing lots of errors even with Log disabled on admin

Hi,

I don't have the log feature enabled in the Administrator area.
I'm getting thousands of error messages on my error_log file, which increases it to Gibabytes in a few weeks.

The error messages are all almost the same, shown below.

Questions:
1) Is this a problem?
2) Is this affecting the performance of the site?
3) How can I get rid of all these errors?

Thanks!

brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$sef_cache as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$url_alias as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$com_exception as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$custom_comp as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$sef_rewrite as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$sufix as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$sef_suffix as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Strict Standards:  Accessing static property SefAdvanceConfig::$sef_cache as non static in /home/brejasco/public_html/brejasbr/components/com_sefadvance/config.php on line 289
[03-Jan-2014 01:48:05 America/Sao_Paulo] PHP Warning:  preg_replace(): Unknown modifier '/' in /home/brejasco/public_html/brejasbr/components/com_sefadvance/build.php on line 135

Hello,

That's not errors, it's strict standards notices. You should be able to deactivate them in your PHP settings.

I was able to disable it from the log, but it's still alerting on New Relic as Error and not as alert

Accessing static property SefAdvanceConfig::$sef_suffix as non static

Is there anything that could be done to avoid this type of error/warnings from being generated by SEF Advance?

What is your PHP version?