As notificações não aparecem quando o aplicativo é fechado

Eu tenho um aplicativo Android com notificações push configurado usando Urban Airship. As notificações funcionam bem enquanto meu aplicativo é aberto, mas ainda preciso receber notificações quando meu aplicativo é fechado. Eu olhei em volta mas não encontrei algo que funcionasse. Tenho certeza que o problema está no meu manifesto, então aqui está.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="za.co.foo.android.financials"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="11" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />

    <!-- Permissions for Urban Airship -->
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> <!-- Not sure if required for C2DM -->
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />

    <!-- Only this application can receive the messages and registration result -->
    <permission android:name="za.co.foo.android.financials.permission.C2D_MESSAGE" android:protectionLevel="signature" />
    <uses-permission android:name="za.co.foo.android.financials.permission.C2D_MESSAGE" />

    <!-- This app has permission to register and receive message -->
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:name=".InvestorRelations"
            android:label="@string/app_name" 
            android:screenOrientation="landscape" 
            android:theme="@android:style/Theme.Holo.NoActionBar">

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- For Urban Airship -->
        <receiver android:name="com.urbanairship.CoreReceiver">
        </receiver>

        <receiver android:name="com.urbanairship.push.c2dm.C2DMPushReceiver"
                android:permission="com.google.android.c2dm.permission.SEND"
                android:enabled="true">
             <!-- Receive the actual message -->
             <intent-filter>
                 <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                 <category android:name="za.co.foo.android.financials" />
             </intent-filter>
             <!-- Receive the registration id -->
             <intent-filter>
                 <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
                 <category android:name="za.co.foo.android.financials" />
             </intent-filter>
        </receiver>

        <receiver android:name="za.co.foo.android.financials.IntentReceiver" />

        <service android:name="com.urbanairship.push.PushService" />

    </application>

</manifest>

Aqui está o meuIntentReceiver

public class IntentReceiver extends BroadcastReceiver {

    private static final String logTag = "IR Intent Receiver";

    @Override
        public void onReceive(Context context, Intent intent) {
        Log.i(logTag, "Received intent: " + intent.toString());
        String action = intent.getAction();

        if (action.equals(PushManager.ACTION_PUSH_RECEIVED)) {
            int id = intent.getIntExtra(PushManager.EXTRA_NOTIFICATION_ID, 0);

            Log.i(logTag, "Received push notification. Alert: "
                    + intent.getStringExtra(PushManager.EXTRA_ALERT)
                    + " [NotificationID="+id+"]");

            logPushExtras(intent);

        } else if (action.equals(PushManager.ACTION_NOTIFICATION_OPENED)) {
            Log.i(logTag, "User clicked notification. Message: " + intent.getStringExtra(PushManager.EXTRA_ALERT));

            logPushExtras(intent);

            Intent launch = new Intent(Intent.ACTION_MAIN);
            launch.setClass(UAirship.shared().getApplicationContext(), InvestorRelations.class);
            launch.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            launch.putExtra("FromNotification", true);

            UAirship.shared().getApplicationContext().startActivity(launch);

        } else if (action.equals(PushManager.ACTION_REGISTRATION_FINISHED)) {
            Log.i(logTag, "Registration complete. APID:" + intent.getStringExtra(PushManager.EXTRA_APID)
                    + ". Valid: " + intent.getBooleanExtra(PushManager.EXTRA_REGISTRATION_VALID, false));
        }

    }

    public void logPushExtras(intent) {
        //Does some logging stuff
    }
}

Qualquer ajuda seria ótimo

Editar

Incluiu todo o manifesto apenas com o nome da minha empresa alterado para "foo".

Editar

Como se constata, meu aplicativo recebe notificações enquanto está fechado, mas não depois de um encerramento forçado. Realizado após a leituraisto questão.

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