Ok, bueno aqui les mando el .hatccess completo, asi podran comprenderlo mejor y guiarme mejor a la reparacion de este problema.
Cita: RewriteEngine on
RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_CGI_AUTHORIZATION:%1]
RewriteRule ^$ /cgi-bin/index.cgi [L]
RewriteRule ([0-9A-Za-z]{12})-del-([0-9A-Za-z]+)/.+$ /cgi-bin/index.cgi?del=$1-$2 [L]
RewriteCond %{REQUEST_FILENAME} !-f
#RewriteRule ^([0-9A-Za-z\-_]*)/?([0-9A-Za-z]{12})(\.html?|$)$ /cgi-bin/index.cgi?op=download1&usr_login=$1&id=$2 [L]
#RewriteRule ^([0-9A-Za-z\-_]*)/?([0-9A-Za-z]{12})/([^\/]*)(\.html?|$)$ /cgi-bin/index.cgi?op=download1&usr_login=$1&id=$2&fname=$3 [L]
RewriteRule ^([0-9A-Za-z]{12})(\.html?|$)$ /cgi-bin/index.cgi?op=download1&id=$1 [L]
RewriteRule ^([0-9A-Za-z\-_]*)/?([0-9A-Za-z]{12})(/[^\/]*|$)(\.html?|$)$ /cgi-bin/index.cgi?op=download1&usr_login=$1&id=$2&fname=$3 [L]
RewriteRule ^checkfiles\.html$ /cgi-bin/index.cgi?op=checkfiles [L]
RewriteRule ^contact\.html$ /cgi-bin/index.cgi?op=contact [L]
RewriteRule ^premium\.html$ /cgi-bin/index.cgi?op=payments [L]
RewriteRule ^login\.html$ /cgi-bin/index.cgi?op=login [L]
RewriteRule ^latest-files(\d*).html$ /cgi-bin/index.cgi?op=catalogue&page=$1 [L]
#RewriteRule ^catalogue(.*)\.html$ /cgi-bin/index.cgi?op=catalogue&date=$1 [L]
RewriteRule ^news([0-9]*)\.html$ /cgi-bin/index.cgi?op=news&page=$1 [L]
RewriteRule ^n([0-9]+)-.*\.html$ /cgi-bin/index.cgi?op=news_details&news_id=$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([0-9A-Za-z\-_]{4,64})(/[^\/]*/?|$)$ /cgi-bin/index.cgi?op=user_public&usr_login=$1&fld=$2 [L,NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([a-z0-9\-\_]+).html(.*) /cgi-bin/index.cgi?op=page&tmpl=$1$2 [L]
ErrorDocument 404 /404.html
Espero me puedan ayudar :S
Muchas gracias por la ayuda ^_^