I'm not sure if the seo plugin is still causing any error but it seems like there are no new php errors according to the date. Guess I'll just leave the plugin alone for now.
As for Main Error Logs:
MAIN error_log:
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:03 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:04 2013] [warn] [client 121.205.242.80] (70007)The timeout specified has expired: mod_fcgid: can't get data from http client, referer: http://alfordplace.com/phpBB/posting.php?mode=newtopic&f=1&sid=c95bb8733fd036c19f27b72657db6d33
[Sat Jan 05 10:49:04 2013] [error] [client 59.106.108.116] Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
[Sat Jan 05 10:49:04 2013] [error] [client 60.173.11.209] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed, referer: http://alkader.net/vb/index.php
[Sat Jan 05 10:49:04 2013] [error] [client 60.173.11.209] 451 (check_connect), referer: http://alkader.net/vb/index.php
[Sat Jan 05 10:49:04 2013] [error] [client 66.249.74.89] File does not exist: /usr/local/apache/htdocs/home3
[Sat Jan 05 10:49:04 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:05 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:06 2013] [error] [client 66.249.74.213] File does not exist: /usr/local/apache/htdocs/index.php
[Sat Jan 05 10:49:06 2013] [error] [client 173.199.115.155] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed
[Sat Jan 05 10:49:06 2013] [error] [client 173.199.115.155] 451 (check_connect)
[Sat Jan 05 10:49:06 2013] [error] [client 173.199.115.155] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed
[Sat Jan 05 10:49:06 2013] [error] [client 173.199.115.155] 451 (check_connect)
[Sat Jan 05 10:49:07 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:07 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:08 2013] [warn] RewriteCond: NoCase option for non-regex pattern '-f' is not supported and will be ignored.
[Sat Jan 05 10:49:12 2013] [error] [client 66.249.74.239] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed
[Sat Jan 05 10:49:12 2013] [error] [client 66.249.74.239] 451 (check_connect)
[Sat Jan 05 10:49:15 2013] [error] [client 173.199.115.155] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed
[Sat Jan 05 10:49:15 2013] [error] [client 173.199.115.155] 451 (check_connect)
[Sat Jan 05 10:49:19 2013] [error] [client 173.199.115.155] 451-SPEED LIMIT: Account has exceeded the max emails per hour allowed
[Sat Jan 05 10:49:19 2013] [error] [client 173.199.115.155] 451 (check_connect)
Content of htaccess seems harmless enough so pls find them below:
# Use PHP5 Single php.ini as default
AddHandler application/x-httpd-php5s .php
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress