vBSEO & .htaccess file problem

[Harmachis]

Im facing a strange problem.

I installed vBSEO 3.2 few days ago. i need to edit my .htaccess file (before that it was blank)

i added this code there:

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On

# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums/)
#RewriteBase /

#RewriteCond %{HTTP_HOST} !^www\.yourdomain\.com
#RewriteRule (.*) http://www.yourdomain.com/forums/$1 [L,R=301]

RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{REQUEST_URI} !(admincp/|modcp/|cron)
RewriteRule ^((archive/)?(.*\.php(/.*)?)?)$ vbseo.php [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !^(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php [L,QSA]

before, when i (or someone) reply to a thread it autometically add below the last post (page not refrash) well its the default vBulletin system....

but after adding those code at .htaccess file...now when i reply the showthread page refrash autometically, then show me: Thanks for posting, if you add poll, it.....blah blah & then autometically redirect & the thread open

well, what should i do now?