From: Wolfgang Rosenauer
Subject: Do not use gconf for proxy settings if not running within Gnome

Index: toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp
===================================================================
RCS file: /cvsroot/mozilla/toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp,v
retrieving revision 1.1

diff --git a/toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp b/toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp
--- a/toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp
+++ b/toolkit/system/unixproxy/nsUnixSystemProxySettings.cpp
@@ -57,25 +57,27 @@ NS_IMETHODIMP
 nsUnixSystemProxySettings::GetMainThreadOnly(bool* aMainThreadOnly) {
   // dbus prevents us from being threadsafe, but this routine should not block
   // anyhow
   *aMainThreadOnly = true;
   return NS_OK;
 }
 
 void nsUnixSystemProxySettings::Init() {
-  mGSettings = do_GetService(NS_GSETTINGSSERVICE_CONTRACTID);
-  if (mGSettings) {
-    mGSettings->GetCollectionForSchema(
-        NS_LITERAL_CSTRING("org.gnome.system.proxy"),
-        getter_AddRefs(mProxySettings));
-  }
-  if (!mProxySettings) {
-    mGConf = do_GetService(NS_GCONFSERVICE_CONTRACTID);
-  }
+  // only use GSettings if that is a GNOME session
+  const char* sessionType = PR_GetEnv("DESKTOP_SESSION");
+  if (sessionType && !strcmp(sessionType, "gnome")) {
+    mGSettings = do_GetService(NS_GSETTINGSSERVICE_CONTRACTID);
+    if (mGSettings) {
+      mGSettings->GetCollectionForSchema(NS_LITERAL_CSTRING("org.gnome.system.proxy"),
+                                         getter_AddRefs(mProxySettings));
+    }
+    if (!mProxySettings) {
+      mGConf = do_GetService(NS_GCONFSERVICE_CONTRACTID);
+    }
 }
 
 bool nsUnixSystemProxySettings::IsProxyMode(const char* aMode) {
   nsAutoCString mode;
   return NS_SUCCEEDED(mGConf->GetString(
              NS_LITERAL_CSTRING("/system/proxy/mode"), mode)) &&
          mode.EqualsASCII(aMode);
 }