Lighttpd

Why all images file were sent as text/plain to the browser instead of image/gif?

i'm using php fcgi and here are my conf:

# lighttpd configuration file
#
# use it as a base for lighttpd 1.0.0 and above
#
# $Id: lighttpd.conf,v 1.7 2004/11/03 22:26:05 weigon Exp $

############ Options you really have to take care of ####################

## modules to load
# at least mod_access and mod_accesslog should be loaded
# all other module should only be loaded if really neccesary
# - saves some time
# - saves memory
server.modules              = (
                               "mod_rewrite",
                               "mod_redirect",
                               "mod_alias",
                                "mod_access",
#                               "mod_cml",
#                               "mod_trigger_b4_dl",
#                               "mod_auth",
                                "mod_status",
#                               "mod_setenv",
                                "mod_fastcgi",
#                               "mod_proxy",
#                               "mod_simple_vhost",
#                               "mod_evhost",
#                               "mod_userdir",
#                               "mod_cgi",
#                               "mod_compress",
#                               "mod_ssi",
#                               "mod_usertrack",
#                               "mod_expire",
#                               "mod_secdownload",
#                               "mod_rrdtool",
                                "mod_accesslog" )

## a static document-root, for virtual-hosting take look at the
## server.virtual-* options
server.document-root        = "/opt/coolstack/lighttpd/htdocs" 

## where to send error-messages to
server.errorlog             = "/opt/coolstack/lighttpd/logs/error.log" 

## where to send error-messages to
server.errorlog             = "/opt/coolstack/lighttpd/logs/error.log" 

# files to check for if .../ is requested
index-file.names            = ( "index.php", "index.html",
                                "index.htm", "default.htm" )

## set the event-handler (read the performance section in the manual)
server.event-handler = "solaris-devpoll" 
server.network-backend = "writev" 

# mimetype mapping
mimetype.assign             = (
  ".pdf"          =>      "application/pdf",
  ".sig"          =>      "application/pgp-signature",
  ".spl"          =>      "application/futuresplash",
  ".class"        =>      "application/octet-stream",
  ".ps"           =>      "application/postscript",
  ".torrent"      =>      "application/x-bittorrent",
  ".dvi"          =>      "application/x-dvi",
  ".gz"           =>      "application/x-gzip",
  ".pac"          =>      "application/x-ns-proxy-autoconfig",
  ".swf"          =>      "application/x-shockwave-flash",
  ".tar.gz"       =>      "application/x-tgz",
  ".tgz"          =>      "application/x-tgz",
  ".tar"          =>      "application/x-tar",
  ".zip"          =>      "application/zip",
  ".mp3"          =>      "audio/mpeg",
  ".m3u"          =>      "audio/x-mpegurl",
  ".wma"          =>      "audio/x-ms-wma",
  ".wax"          =>      "audio/x-ms-wax",
  ".ogg"          =>      "application/ogg",
  ".wav"          =>      "audio/x-wav",
  ".gif"          =>      "image/gif",
  ".jpg"          =>      "image/jpeg",
  ".jpeg"         =>      "image/jpeg",
  ".png"          =>      "image/png",
  ".xbm"          =>      "image/x-xbitmap",
  ".xpm"          =>      "image/x-xpixmap",
  ".xwd"          =>      "image/x-xwindowdump",
  ".css"          =>      "text/css",
  ".html"         =>      "text/html",
  ".htm"          =>      "text/html",
  ".js"           =>      "text/javascript",
  ".asc"          =>      "text/plain",
  ".c"            =>      "text/plain",
  ".cpp"          =>      "text/plain",
  ".log"          =>      "text/plain",
  ".conf"         =>      "text/plain",
  ".text"         =>      "text/plain",
  ".txt"          =>      "text/plain",
  ".dtd"          =>      "text/xml",
  ".xml"          =>      "text/xml",
  ".mpeg"         =>      "video/mpeg",
  ".mpg"          =>      "video/mpeg",
  ".mov"          =>      "video/quicktime",
  ".qt"           =>      "video/quicktime",
  ".avi"          =>      "video/x-msvideo",
  ".asf"          =>      "video/x-ms-asf",
  ".asx"          =>      "video/x-ms-asf",
  ".wmv"          =>      "video/x-ms-wmv",
  ".bz2"          =>      "application/x-bzip",
  ".tbz"          =>      "application/x-bzip-compressed-tar",
  ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
# default mime type
  ""              =>      "application/octet-stream" 
 )

# Use the "Content-Type" extended attribute to obtain mime type if possible
mimetype.use-xattr        = "disable" 

## send a different Server: header
## be nice and keep it at lighttpd
# server.tag                 = "lighttpd" 

#### accesslog module
accesslog.filename          = "/opt/coolstack/lighttpd/logs/access.log" 

## deny access the file-extensions
#
# ~    is for backupfiles from vi, emacs, joe, ...
# .inc is often used for code includes which should in general not be part
#      of the document-root
url.access-deny             = ( "~", ".inc" )

$HTTP["url"] =~ "\.pdf$" {
  server.range-requests = "disable" 
}

##
# which extensions should not be handle via static-file transfer
#
# .php, .pl, .fcgi are most often handled by mod_fastcgi or mod_cgi
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

######### Options that are good to be but not neccesary to be changed #######

## bind to port (default: 80)
#server.port                = 81

## bind to localhost (default: all interfaces)
#server.bind                = "127.0.0.1" 

## error-handler for status 404
#server.error-handler-404   = "/error-handler.html" 
#server.error-handler-404   = "/error-handler.php" 

## to help the rc.scripts
server.pid-file            = "/opt/coolstack/lighttpd/var/run/lighttpd.pid" 

###### virtual hosts
##
##  If you want name-based virtual hosting add the next three settings and load
##  mod_simple_vhost
##
## document-root =
##   virtual-server-root + virtual-server-default-host + virtual-server-docroot
## or
##   virtual-server-root + http-host + virtual-server-docroot

##
#simple-vhost.server-root   = "/srv/www/vhosts/" 
#simple-vhost.default-host  = "www.example.org" 
#simple-vhost.document-root = "/htdocs/" 

##
## Format: <errorfile-prefix><status-code>.html
## -> ..../status-404.html for 'File not found'
#server.errorfile-prefix    = "/usr/share/lighttpd/errors/status-" 

## virtual directory listings
#dir-listing.activate       = "enable" 

## enable debugging
#debug.log-request-header   = "enable" 
#debug.log-response-header  = "enable" 
#debug.log-request-handling = "enable" 
#debug.log-file-not-found   = "enable" 

### only root can use these options
#
# chroot() to directory (default: no chroot() )
#server.chroot              = "/" 

## change uid to <uid> (default: don't care)
server.username            = "webservd" 

## change uid to <uid> (default: don't care)
server.groupname           = "webservd" 

#### compress module
#compress.cache-dir         = "/var/cache/lighttpd/compress/" 
#compress.filetype          = ("text/plain", "text/html")

# serve index pages
url.rewrite-once = ( "^/target/$" => "/target/index.php" )

fastcgi.server = (
  "" =>
  (( "host" => "10.1.77.212",
     "port" => 8001,
     "check-local" => "disable" 
     ,"allow-x-send-file"     => "enable" 
     ,"broken-scriptfilename" => "enable" 
  ))
)

# Set max-worker at least equal to number of cores/threads on system
server.max-worker = 4

server.max-request-size        = 10000
server.upload-dirs = ("/var/tmp/")