diff --git a/INSTALL.varnish b/INSTALL.varnish
index c9793f9..b17679e 100644
--- a/INSTALL.varnish
+++ b/INSTALL.varnish
@@ -15,6 +15,10 @@ Noosfero was tested with Varnish 2.x. If you are using a Debian Lenny (and you
 should, unless Debian already released Squeeze by now), make sure you install
 varnish from the lenny-backports suite.
 
+Install the RPAF apache module (or skip this step if not using apache):
+
+  # apt-get install libapache2-mod-rpaf
+
 3) Enable varnish logging:
 
 3a) Edit /etc/default/varnishncsa and uncomment the line that contains:
diff --git a/etc/noosfero/varnish-noosfero.vcl b/etc/noosfero/varnish-noosfero.vcl
index 86e663c..4aff0aa 100644
--- a/etc/noosfero/varnish-noosfero.vcl
+++ b/etc/noosfero/varnish-noosfero.vcl
@@ -1,13 +1,15 @@
 sub vcl_recv {
+  if (req.request == "GET" || req.request == "HEAD") {
     if (req.http.Cookie) {
-        # We only care about the "_noosfero_session.*" cookie, used for
-        # authentication.
-        if (req.http.Cookie ~ "_noosfero_session.*" ) {
-             return (pass);
-        }
-        # Else strip all cookies
-        unset req.http.Cookie;
+      # We only care about the "_noosfero_session.*" cookie, used for
+      # authentication.
+      if (req.http.Cookie ~ "_noosfero_session.*" ) {
+           return (pass);
+      }
+      # Else strip all cookies
+      unset req.http.Cookie;
     }
+  }
 }
 
 sub vcl_error {
--
libgit2 0.21.2