Проблема с htaccess

У меня проблема с одним правилом в htaccess.

Файл .htaccess

RewriteEngine on
RewriteCond %{request_filename} -f
RewriteRule ^(.*)                                           $1                                  [L]
RewriteRule ^(([^/]*)+)?$                                   index.php?a=$1                      [L]

RewriteRule ^welcome/?$                                     index.php?a=welcome                 [NC]

RewriteRule ^feed/?$                                        index.php?a=feed                    [NC]
RewriteRule ^feed/filter/([^/]+)/?$                         index.php?a=feed&filter=$1          [NC]
RewriteRule ^feed/logout$                                   index.php?a=feed&logout             [NC]

RewriteRule ^profile/([^/]+)/?$                             index.php?a=profile&u=$1            [NC]
RewriteRule ^profile/([^/]+)/([^/]+)/?$                     index.php?a=profile&u=$1&r=$2       [NC]
RewriteRule ^profile/([^/]+)/filter/([^/]+)/?$              index.php?a=profile&u=$1&filter=$2  [NC]

RewriteRule ^page/?$                                        index.php?a=page                    [NC]
RewriteRule ^page/([^/]+)/?$                                index.php?a=page&name=$1            [NC]
RewriteRule ^page/deleted/([^/]+)/?$                        index.php?a=page&deleted=$1         [NC]
RewriteRule ^page/([^/]+)/([^/]+)/?$                        index.php?a=page&name=$1&r=$2       [NC]
RewriteRule ^page/([^/]+)/friends/([^/]+)/?$                index.php?a=page&name=$1&friends=$2 [NC]

RewriteRule ^group/?$                                       index.php?a=group                   [NC]
RewriteRule ^group/([^/]+)/?$                               index.php?a=group&name=$1           [NC]
RewriteRule ^group/deleted/([^/]+)/?$                       index.php?a=group&deleted=$1        [NC]
RewriteRule ^group/([^/]+)/([^/]+)/?$                       index.php?a=group&name=$1&r=$2      [NC]
RewriteRule ^group/([^/]+)/search/([^/]+)/?$                index.php?a=group&name=$1&search=$2 [NC]
RewriteRule ^group/([^/]+)/friends/([^/]+)/?$               index.php?a=group&name=$1&friends=$2[NC]

RewriteRule ^notifications/?$                               index.php?a=notifications           [NC]
RewriteRule ^notifications/filter/([^/]+)/?$                index.php?a=notifications&filter=$1 [NC]

RewriteRule ^settings/?$                                    index.php?a=settings                [NC]
RewriteRule ^settings/([^/]+)/?$                            index.php?a=settings&b=$1           [NC]

RewriteRule ^messages/?$                                    index.php?a=messages                [NC]
RewriteRule ^messages/([^/]+)/([^/]+)/?$                    index.php?a=messages&u=$1&id=$2     [NC]

RewriteRule ^post/([^/]+)/?$                                index.php?a=post&m=$1               [NC]

RewriteRule ^search/([^/]+)/?$                              index.php?a=search&q=$1             [NC]
RewriteRule ^search/tag/([^/]+)/?$                          index.php?a=search&tag=$1           [NC]
RewriteRule ^search/tag/([^/]+)/filter/([^/]+)/?$           index.php?a=search&tag=$1&filter=$2 [NC]
RewriteRule ^search/groups/([^/]+)/?$                       index.php?a=search&groups=$1        [NC]
RewriteRule ^search/pages/([^/]+)/?$                        index.php?a=search&pages=$1         [NC]
RewriteRule ^search/([^/]+)/filter/([^/]+)/?$               index.php?a=search&q=$1&filter=$2   [NC]
RewriteRule ^search/([^/]+)/age/([^/]+)/?$                  index.php?a=search&q=$1&age=$2      [NC]
RewriteRule ^search/([^/]+)/age/([^/]+)/filter/([^/]+)/?$   index.php?a=search&q=$1&age=$2&filter=$3 [NC]

RewriteRule ^info/([^/]+)/?$                                index.php?a=info&b=$1               [NC]

RewriteRule ^recover/?$                                     index.php?a=recover                 [NC]
RewriteRule ^recover/do/?$                                  index.php?a=recover&r=1             [NC]
RewriteRule ^image/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?$       image.php?t=$1&w=$2&h=$3&src=$4     [NC]

Проблема с последним правилом

RewriteRule ^image/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?$       image.php?t=$1&w=$2&h=$3&src=$4     [NC]

Регулярное выражение проверил - правильное. Остальные правила, вроде-бы, построены аналогично, но они работают, а это - нет. Кроме того, если заменить image в левой части на любое другое слово, правило начинает работать. Не могу понять в чем дело. Если кто знает, поделитесь мудростью, пожалуйста.