diff -ruN gwibber-2.29.92.1.old/gwibber/microblog/network.py gwibber-2.29.92.1/gwibber/microblog/network.py
--- gwibber-2.29.92.1.old/gwibber/microblog/network.py	2010-03-24 17:48:50.909059359 +0200
+++ gwibber-2.29.92.1/gwibber/microblog/network.py	2010-03-24 17:54:54.417058838 +0200
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-import urllib, pycurl, json, StringIO
+import urllib, pycurl, json, StringIO, gconf
 import traceback
 from util import log
 from util import exceptions
@@ -8,6 +8,19 @@
 class CurlDownloader:
   def __init__(self, url, params=None, post=False, username=None, password=None):
     self.curl = pycurl.Curl()
+    
+    self.gconf_client = gconf.client_get_default()
+    self.use_http_proxy = self.gconf_client.get_bool("/system/http_proxy/use_http_proxy")
+    if(self.use_http_proxy):
+        self.use_http_authentification = self.gconf_client.get_bool("/system/http_proxy/use_authentification")
+        if(self.use_http_authentification):
+            self.http_proxy_user = self.gconf_client.get_string("/system/http_proxy/authentication_user")
+            self.http_proxy_password = self.gconf_client.get_string("/system/http_proxy/authentication_password") 
+            self.curl.setopt(pycurl.PROXYUSERPWD, self.http_proxy_user + ":" + self.http_proxy_password)
+            self.curl.setopt(pycurl.PROXYAUTH, ["CURLAUTH_ANY"])
+        self.http_proxy_host = self.gconf_client.get_string("/system/http_proxy/host")
+        self.http_proxy_port = self.gconf_client.get_int("/system/http_proxy/port")
+        self.curl.setopt(pycurl.PROXY, self.http_proxy_host + ":" + str(self.http_proxy_port))
   
     if params:
       if post: