diff --git a/res/values-sw600dp/dimens.xml b/res/values-sw600dp/dimens.xml
deleted file mode 100644
index 44f01db75..000000000
--- a/res/values-sw600dp/dimens.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-    
-
-
diff --git a/res/values-sw720dp-land/dimens.xml b/res/values-sw720dp-land/dimens.xml
deleted file mode 100644
index 61e3fa8fb..000000000
--- a/res/values-sw720dp-land/dimens.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-
-
-    
-    128dp
-
-
diff --git a/res/values-v11/styles.xml b/res/values-v11/styles.xml
deleted file mode 100644
index 3c02242ad..000000000
--- a/res/values-v11/styles.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-
-
-    
-    
-
-
diff --git a/res/values-v14/styles.xml b/res/values-v14/styles.xml
deleted file mode 100644
index a91fd0372..000000000
--- a/res/values-v14/styles.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-
-
-    
-    
-
-
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
deleted file mode 100644
index 55c1e5908..000000000
--- a/res/values/dimens.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-
-
-    
-    16dp
-    16dp
-
-
diff --git a/res/values/strings.xml b/res/values/strings.xml
index f4b7d5fa1..fa41b7b81 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -80,7 +80,7 @@
     Send unencrypted
     Decrpytion failed. Maybe you don’t have the proper private key.
     OpenKeychain
-    Conversations utilizes a third party called OpenKeychain to encrypt and decrypt messages and to mange your public keys.\n\nOpenKeychain is licensed under GPLv3 and available on F-Droid and Google Play.\n\nTo use openPGP please install the app and then restart Conversations.
+    Conversations utilizes a third party app called OpenKeychain to encrypt and decrypt messages and to mange your public keys.\n\nOpenKeychain is licensed under GPLv3 and available on F-Droid and Google Play.\n\n(Please restart Conversations afterwards.)
     Restart
     Install
 
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 20cfcf1d9..1468283ed 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -1,24 +1,6 @@
 
 
-    
-    
-
-    
-    
-
-    
-     
-    
-     
-	
-
+
+    
+
+
\ No newline at end of file
diff --git a/src/eu/siacs/conversations/services/XmppConnectionService.java b/src/eu/siacs/conversations/services/XmppConnectionService.java
index 157b8175c..06ba34ab6 100644
--- a/src/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/eu/siacs/conversations/services/XmppConnectionService.java
@@ -377,12 +377,14 @@ public class XmppConnectionService extends Service {
 
 		@Override
 		public void onIqPacketReceived(Account account, IqPacket packet) {
-			if (packet.hasChild("query")) {
-				Element query = packet.findChild("query");
-				String xmlns = query.getAttribute("xmlns");
-				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
+			if (packet.hasChild("query","jabber:iq:roster")) {
+				String from = packet.getFrom();
+				if ((from==null)||(from.equals(account.getJid()))) {
+					Element query = packet.findChild("query");
 					processRosterItems(account, query);
 					mergePhoneContactsWithRoster(null);
+				} else {
+					Log.d(LOGTAG,"unauthorized roster push from: "+from);
 				}
 			} else if (packet
 					.hasChild("open", "http://jabber.org/protocol/ibb")
@@ -390,8 +392,22 @@ public class XmppConnectionService extends Service {
 							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 				XmppConnectionService.this.mJingleConnectionManager
 						.deliverIbbPacket(account, packet);
+			} else if (packet.hasChild("query","http://jabber.org/protocol/disco#info")) {
+				IqPacket iqResponse = packet.generateRespone(IqPacket.TYPE_RESULT);
+				Element query = iqResponse.addChild("query", "http://jabber.org/protocol/disco#info");
+				query.addChild("feature").setAttribute("var", "urn:xmpp:jingle:1");
+				query.addChild("feature").setAttribute("var", "urn:xmpp:jingle:apps:file-transfer:3");
+				query.addChild("feature").setAttribute("var", "urn:xmpp:jingle:transports:s5b:1");
+				query.addChild("feature").setAttribute("var", "urn:xmpp:jingle:transports:ibb:1");
+				account.getXmppConnection().sendIqPacket(iqResponse, null);
 			} else {
-				Log.d(LOGTAG, "iq packet arrived " + packet.toString());
+				if ((packet.getType() == IqPacket.TYPE_GET)||(packet.getType() == IqPacket.TYPE_SET)) {
+					IqPacket response = packet.generateRespone(IqPacket.TYPE_ERROR);
+					Element error = response.addChild("error");
+					error.setAttribute("type","cancel");
+					error.addChild("feature-not-implemented","urn:ietf:params:xml:ns:xmpp-stanzas");
+					account.getXmppConnection().sendIqPacket(response, null);
+				}
 			}
 		}
 	};
@@ -619,6 +635,7 @@ public class XmppConnectionService extends Service {
 
 	@Override
 	public void onDestroy() {
+		Log.d(LOGTAG,"stopping service");
 		super.onDestroy();
 		for (Account account : accounts) {
 			if (account.getXmppConnection() != null) {
diff --git a/src/eu/siacs/conversations/ui/XmppActivity.java b/src/eu/siacs/conversations/ui/XmppActivity.java
index 1f9c678a1..70c4614d5 100644
--- a/src/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/eu/siacs/conversations/ui/XmppActivity.java
@@ -95,8 +95,12 @@ public abstract class XmppActivity extends Activity {
 				
 				@Override
 				public void onClick(DialogInterface dialog, int which) {
-					// TODO Auto-generated method stub
-					
+					if (xmppConnectionServiceBound) {
+						unbindService(mConnection);
+						xmppConnectionServiceBound = false;
+					}
+					stopService(new Intent(XmppActivity.this, XmppConnectionService.class));
+					finish();
 				}
 			});
 			builder.setPositiveButton(getString(R.string.install), new OnClickListener() {
@@ -106,6 +110,7 @@ public abstract class XmppActivity extends Activity {
 					Uri uri = Uri.parse("market://details?id=org.sufficientlysecure.keychain");
 					Intent intent = new Intent(Intent.ACTION_VIEW, uri);
 					startActivity(intent);
+					finish();
 				}
 			});
 			builder.create().show();
diff --git a/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java b/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
index bcf75c0c1..3a20b87fb 100644
--- a/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
+++ b/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
@@ -52,6 +52,9 @@ public class JingleConnection {
 	private Element fileOffer;
 	private JingleFile file = null;
 	
+	private String contentName;
+	private String contentCreator;
+	
 	private boolean receivedCandidate = false;
 	private boolean sentCandidate = false;
 	
@@ -160,6 +163,8 @@ public class JingleConnection {
 	}
 	
 	public void init(Message message) {
+		this.contentCreator = "initiator";
+		this.contentName = this.mJingleConnectionManager.nextRandomId();
 		this.message = message;
 		this.account = message.getConversation().getAccount();
 		this.initiator = this.account.getFullJid();
@@ -215,6 +220,8 @@ public class JingleConnection {
 		this.responder = this.account.getFullJid();
 		this.sessionId = packet.getSessionId();
 		Content content = packet.getJingleContent();
+		this.contentCreator = content.getAttribute("creator");
+		this.contentName = content.getAttribute("name");
 		this.transportId = content.getTransportId();
 		this.mergeCandidates(JingleCandidate.parse(content.socks5transport().getChildren()));
 		this.fileOffer = packet.getJingleContent().getFileOffer();
@@ -263,10 +270,8 @@ public class JingleConnection {
 	
 	private void sendInitRequest() {
 		JinglePacket packet = this.bootstrapPacket("session-initiate");
-		Content content = new Content();
+		Content content = new Content(this.contentCreator,this.contentName);
 		if (message.getType() == Message.TYPE_IMAGE) {
-			content.setAttribute("creator", "initiator");
-			content.setAttribute("name", "a-file-offer");
 			content.setTransportId(this.transportId);
 			this.file = this.mXmppConnectionService.getFileBackend().getJingleFile(message);
 			content.setFileOffer(this.file);
@@ -295,7 +300,7 @@ public class JingleConnection {
 			@Override
 			public void onPrimaryCandidateFound(boolean success,final JingleCandidate candidate) {
 				final JinglePacket packet = bootstrapPacket("session-accept");
-				final Content content = new Content();
+				final Content content = new Content(contentCreator,contentName);
 				content.setFileOffer(fileOffer);
 				content.setTransportId(transportId);
 				if ((success)&&(!equalCandidateExists(candidate))) {
@@ -499,7 +504,7 @@ public class JingleConnection {
 	
 	private void sendFallbackToIbb() {
 		JinglePacket packet = this.bootstrapPacket("transport-replace");
-		Content content = new Content("initiator","a-file-offer");
+		Content content = new Content(this.contentCreator,this.contentName);
 		this.transportId = this.mJingleConnectionManager.nextRandomId();
 		content.setTransportId(this.transportId);
 		content.ibbTransport().setAttribute("block-size",""+this.ibbBlockSize);
@@ -613,7 +618,7 @@ public class JingleConnection {
 	
 	private void sendProxyActivated(String cid) {
 		JinglePacket packet = bootstrapPacket("transport-info");
-		Content content = new Content("inititaor","a-file-offer");
+		Content content = new Content(this.contentCreator,this.contentName);
 		content.setTransportId(this.transportId);
 		content.socks5transport().addChild("activated").setAttribute("cid", cid);
 		packet.setContent(content);
@@ -622,7 +627,7 @@ public class JingleConnection {
 	
 	private void sendCandidateUsed(final String cid) {
 		JinglePacket packet = bootstrapPacket("transport-info");
-		Content content = new Content("initiator","a-file-offer");
+		Content content = new Content(this.contentCreator,this.contentName);
 		content.setTransportId(this.transportId);
 		content.socks5transport().addChild("candidate-used").setAttribute("cid", cid);
 		packet.setContent(content);
@@ -635,7 +640,7 @@ public class JingleConnection {
 	
 	private void sendCandidateError() {
 		JinglePacket packet = bootstrapPacket("transport-info");
-		Content content = new Content("initiator","a-file-offer");
+		Content content = new Content(this.contentCreator,this.contentName);
 		content.setTransportId(this.transportId);
 		content.socks5transport().addChild("candidate-error");
 		packet.setContent(content);
diff --git a/src/eu/siacs/conversations/xmpp/stanzas/IqPacket.java b/src/eu/siacs/conversations/xmpp/stanzas/IqPacket.java
index 9e2884540..48e5c0ecd 100644
--- a/src/eu/siacs/conversations/xmpp/stanzas/IqPacket.java
+++ b/src/eu/siacs/conversations/xmpp/stanzas/IqPacket.java
@@ -26,6 +26,9 @@ public class IqPacket extends AbstractStanza {
 		case TYPE_RESULT:
 			this.setAttribute("type", "result");
 			break;
+		case TYPE_ERROR:
+			this.setAttribute("type", "error");
+			break;
 		default:
 			break;
 		}