[CrystaStarLight]

Hi, this has sped up my forum greatly, however I'm getting tons of errors in my cpanel's error log, it's repeating every minute. I'll show the errors below. Is there anyway to fix these?

[Sat Jul 09 23:07:23 2011] [error] [client 24.2.245.152] PHP Warning:  Cannot modify header information - headers already sent by (output started at /home/****/public_html/forum/redir.php:14) in /home/****/public_html/forum/redir.php on line 37, referer: http://www.****.com/forum/forums/32-Caption-Me!/page8?order=desc

[Sat Jul 09 23:07:23 2011] [error] [client 24.2.245.152] PHP Warning:  Cannot modify header information - headers already sent by (output started at /home/****/public_html/forum/redir.php:14) in /home/****/public_html/forum/redir.php on line 37, referer: http://www.****.com/forum/forums/32-Caption-Me!/page8?order=desc

[Sat Jul 09 23:07:23 2011] [error] [client 24.2.245.152] PHP Warning:  implode() [<a href='function.implode'>function.implode</a>]: Invalid arguments passed in /home/****/public_html/forum/redir.php on line 34, referer: http://www.****.com/forum/forums/32-Caption-Me!/page8?order=desc

Edit: I've noticed my htacess file is a bit modified. It has the same code from Yslow, but with extra for other programs, and extra optimizations. Would any of this be conflicting to create those errors?
......................................

RewriteEngine on

# If you are having problems or are using VirtualDocumentRoot, uncomment this line and set it to your vBulletin directory.
# RewriteBase /forum/

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d

RewriteRule ^.*$ - [NC,L]

# Forum
RewriteRule ^threads/.* showthread.php [QSA]
RewriteRule ^forums/.* forumdisplay.php [QSA]
RewriteRule ^members/.* member.php [QSA]
RewriteRule ^blogs/.* blog.php [QSA]
ReWriteRule ^entries/.* entry.php [QSA]

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d

RewriteRule ^.*$ - [NC,L]

# MVC
RewriteRule ^(?:(.*?)(?:/|$))(.*|$)$ $1.php?r=$2 [QSA]

####Charset
AddDefaultCharset Off 

####Gzip
<IfModule mod_rewrite.c>
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*) index.php?do=/$1
RewriteRule ^(.*)(js|css)$ redir.php?file=$1$2&type=$2 [L]
# Image Access Protection
# RewriteRule ^file/pic/photo/(.*)\.(.*)$ static/image.php?file=$1&ext=$2
</IfModule>

####ETags
FileETag None

<ifModule mod_expires.c>
  ExpiresActive On
  ExpiresDefault "access plus 1 seconds"
  ExpiresByType text/html "access plus 1 seconds"
  ExpiresByType text/javascript "access plus 216000 seconds"
ExpiresByType image/gif A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/png A2592000
ExpiresByType application/x-shockwave-flash A2592000
ExpiresByType text/css A2592000
ExpiresByType application/x-javascript A2592000
</ifModule>

<ifModule mod_headers.c>
  <filesMatch "\\.(ico|pdf|flv|jpg|jpeg|png|gif|swf)$">
    Header set Cache-Control "max-age=259200, public"
  </filesMatch>
  <filesMatch "\\.(css)$">
    Header set Cache-Control "max-age=604800, public"
  </filesMatch>
  <filesMatch "\\.(js)$">
    Header set Cache-Control "max-age=21600, private"
  </filesMatch>
  <filesMatch "\\.(xml|txt)$">
    Header set Cache-Control "max-age=21600, public, must-revalidate"
  </filesMatch>
  <filesMatch "\\.(html|htm|php)$">
    Header set Cache-Control "max-age=1, private, must-revalidate"
  </filesMatch>
</ifModule>

<ifModule mod_headers.c>
  Header unset ETag
</ifModule>

<ifModule mod_headers.c>
  Header unset Last-Modified
</ifModule>

<IfModule mod_security.c>
   SecFilterEngine Off
   SecFilterScanPOST Off
</IfModule>

php_value memory_limit "64M"
php_value upload_max_filesize 3M

Thank you!