Can anyone confirm that the .htaccess file is correct:

Options +FollowSymLinks
RewriteEngine on

RewriteRule ^admin$ - [L]
RewriteRule ^admin/(.*) - [L]
RewriteRule ^install$ - [L]
RewriteRule ^install/(.*) - [L]
RewriteRule ^ubr/(.*) - [L]
RewriteRule ^$ index.php
RewriteRule ^view/(.*)/(.*)/ view_video.php?id=$1 [L,QSA]
RewriteRule ^tags/ tags.php [L,QSA]
RewriteRule ^tag/(.*)/(.*) tag.php?search_string=$1&page=$2 [L,QSA]
RewriteRule ^cache/ index.php [L,QSA]
RewriteRule ^channels/ channels.php [L,QSA]
RewriteRule ^upload/success/(.*)/(.*)/ upload_success.php?id=$1&upload_id=$2 [L,QSA]
RewriteRule ^upload/ upload.php [L,QSA]
RewriteRule ^channel/(.*)/(.*)/recent/(.*) video.php?category=recent&chid=$1&page=$3
RewriteRule ^channel/(.*)/(.*)/viewed/(.*) video.php?category=viewed&chid=$1&page=$3
RewriteRule ^channel/(.*)/(.*)/ channel_details.php?id=$1
RewriteRule ^download/(.*)/ download.php?video_id=$1 [L,QSA]
RewriteRule ^friends/recommend/(.*)/ recommend_friends.php?video_id=$1 [QSA,L]
RewriteRule ^friends/invite/ invite_friends.php?user_name=$1&page=$2 [L,QSA]
RewriteRule ^friends/(.*) friends.php?page=$1 [L,QSA]
RewriteRule ^detailed/recent/(.*) video.php?category=recent&page=$1&view_type=detail ed
RewriteRule ^detailed/viewed/(.*) video.php?category=viewed&page=$1&view_type=detail ed
RewriteRule ^detailed/discussed/(.*) video.php?category=discussed&page=$1&view_type=det ailed
RewriteRule ^detailed/favorites/(.*) video.php?category=favorites&page=$1&view_type=det ailed
RewriteRule ^detailed/rated/(.*) video.php?category=rated&page=$1&view_type=detaile d
RewriteRule ^detailed/featured/(.*) video.php?category=featured&page=$1&view_type=deta iled
RewriteRule ^detailed/random/(.*) video.php?category=random&page=$1&view_type=detail ed
RewriteRule ^recent/(.*) video.php?category=recent&page=$1
RewriteRule ^viewed/(.*) video.php?category=viewed&page=$1
RewriteRule ^edit/video/(.*) video_edit.php?video_id=$1
RewriteRule ^discussed/(.*) video.php?category=discussed&page=$1
RewriteRule ^favorites/(.*) video.php?category=favorites&page=$1
RewriteRule ^rated/(.*) video.php?category=rated&page=$1
RewriteRule ^featured/(.*) video.php?category=featured&page=$1
RewriteRule ^random/(.*) video.php?category=random&page=$1
RewriteRule ^rss/new/ rss.php?type=new [L]
RewriteRule ^rss/comments/ rss.php?type=comments [L]
RewriteRule ^rss/views/ rss.php?type=views [L]
RewriteRule ^group/new/ group_new.php
RewriteRule ^group/(.*)/join/(.*)/ group_invite_confirm.php?group_url=$1&key=$2 [L,QSA]
RewriteRule ^group/(.*)/members/(.*) group_members.php?group_url=$1&page=$2
RewriteRule ^group/(.*)/videos/(.*) group_videos.php?group_url=$1&page=$2
RewriteRule ^group/(.*)/add/(.*) group_add_videos.php?group_url=$1&page=$2
RewriteRule ^group/(.*)/fav/(.*) group_add_fav_videos.php?group_url=$1&page=$2
RewriteRule ^group/(.*)/topic/(.*) group_posts.php?group_url=$1&topic_id=$2
RewriteRule ^group/(.*)/invite/ invite_members.php?group_url=$1 [L,QSA]
RewriteRule ^group/(.*)/edit/ group_edit.php?group_url=$1 [L,QSA]
RewriteRule ^group/(.*)/ group_home.php?group_url=$1 [L,QSA]
RewriteRule ^groups/(.*)/(.*)/(.*) groups.php?chid=$1&page=$3
RewriteRule ^groups/(.*)/(.*) groups.php?category=$1&page=$2
RewriteRule ^include/(.*) vShare Video Sharing Script - YouTube Clone Script, script to start video sharing community
RewriteRule ^login/ login.php [L,QSA]
RewriteRule ^logout/ logout.php [L,QSA]
RewriteRule ^signup/ signup.php [L,QSA]
RewriteRule ^pages/(.*).html$ show_page.php?name=$1 [QSA,L]
RewriteRule ^v/(.*)/ video_embed.php?video_id=$1 [L,QSA]
RewriteRule ^verify/user/(.*)/(.*)/(.*)/ user_signup_verify.php?u=$1&i=$2&k=$3
RewriteRule ^verify/email/(.*)/(.*)/(.*)/ confirm_email.php?u=$1&i=$2&k=$3
RewriteRule ^confirm/friend/(.*)/(.*) friend_accept.php?id=$1&key=$2
RewriteRule ^search/(.*)/(.*) search_videos.php?search_string=$1&page=$2 [L,QSA]
RewriteRule ^search/(.*)/(.*)/(.*)/(.*)/(.*)/(.*) advanced_search.php?words=$1&channels=$2&user=$3&r elevence=$4&sort=$5&page=$6
RewriteRule ^style/(.*)/ style.php?css=$1 [L,QSA]
RewriteRule ^([^/\.]+)/favorites/(.*) user_favorites.php?user_name=$1&page=$2
RewriteRule ^([^/\.]+)/playlist/(.*) user_playlist.php?user_name=$1&page=$2
RewriteRule ^([^/\.]+)/friends/videos/(.*) user_friends_videos.php?user_name=$1&page=$2 [L,QSA]
RewriteRule ^([^/\.]+)/friends/favorites/(.*) user_friends_favourites.php?user_name=$1&page=$2 [L,QSA]
RewriteRule ^([^/\.]+)/friends/(.*) user_friends.php?user_name=$1&page=$2
RewriteRule ^([^/\.]+)/public/(.*)$ user_videos.php?user_name=$1&type=public&page=$2
RewriteRule ^([^/\.]+)/private/(.*)$ user_videos.php?user_name=$1&type=private&page=$2 [L,QSA]
RewriteRule ^([^/\.]+)/groups/(.*)$ user_groups.php?user_name=$1&page=$2 [L,QSA]
RewriteRule ^([^/\.]+)/edit/(.*)$ user_profile_edit.php?user_name=$1 [L,QSA]
RewriteRule ^([^/\.]+)?/?$ user.php?user_name=$1 [L,QSA]

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

<IfModule mod_gzip.c>
mod_gzip_on No
</IfModule>

thanks