Index: /trunk/src/org/openstreetmap/josm/gui/oauth/OsmOAuthAuthorizationClient.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/oauth/OsmOAuthAuthorizationClient.java	(revision 9912)
+++ /trunk/src/org/openstreetmap/josm/gui/oauth/OsmOAuthAuthorizationClient.java	(revision 9913)
@@ -18,9 +18,4 @@
 import java.util.regex.Pattern;
 
-import oauth.signpost.OAuth;
-import oauth.signpost.OAuthConsumer;
-import oauth.signpost.OAuthProvider;
-import oauth.signpost.exception.OAuthException;
-
 import org.openstreetmap.josm.Main;
 import org.openstreetmap.josm.data.oauth.OAuthParameters;
@@ -33,4 +28,9 @@
 import org.openstreetmap.josm.tools.HttpClient;
 import org.openstreetmap.josm.tools.Utils;
+
+import oauth.signpost.OAuth;
+import oauth.signpost.OAuthConsumer;
+import oauth.signpost.OAuthProvider;
+import oauth.signpost.exception.OAuthException;
 
 /**
@@ -259,5 +259,5 @@
             final URL url = new URL(oauthProviderParameters.getOsmLoginUrl() + "?cookie_test=true");
             synchronized (this) {
-                connection = HttpClient.create(url);
+                connection = HttpClient.create(url).useCache(false);
                 connection.connect();
             }
@@ -289,4 +289,5 @@
             synchronized (this) {
                 connection = HttpClient.create(url)
+                        .useCache(false)
                         .setHeader("Cookie", "_osm_session=" + sessionId.id + "; _osm_username=" + sessionId.userName);
                 connection.connect();