I am using spring-data with MongoDB and i have trouble to delete data.

When i call delete(domainObject) it simply won't delete my data. But deleteAll() works.

I have written a simple TestCase that shows my problem.

The Repository:

Code:
import org.bson.types.ObjectId;
import org.springframework.data.document.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface IMyResourceRepository extends MongoRepository<MyResource, ObjectId> {


}
This is my simple DomainObject (shortened):

Code:
import org.bson.types.ObjectId;

public class MyResource implements Serializable {

    private static final long serialVersionUID = 1L;

    private ObjectId id;

    private String mimeType;

    private String name;


    // ...


}
The TestCase

Code:
    @Test
    public void testInsertAndDelete() {
        MyResource resource = createResource("test.jpg", "image/jpg", "TEST");

        // insert
        MyResource saved = resourceRepository.save(resource);

        assertNotNull(saved);

        // check if insert succeeded
        MyResource found = resourceRepository.findById(saved.getId());

        assertNotNull(found);

        // check if it is the same
        assertEquals(saved, found);

        assertEquals(saved.getId(), found.getId());


        // delete
        resourceRepository.delete(found);

        // check if it isn't available anymore
        MyResource foundAfter = resourceRepository.findById(saved.getId());

        assertNull(foundAfter);	// -> fails!!!!!!!

        resourceRepository.deleteAll(); // -> works!
    }

Code:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:sec="http://www.springframework.org/schema/security" xmlns:cxf="http://cxf.apache.org/core" xmlns:jaxrs="http://cxf.apache.org/jaxrs"
	xmlns:mongo="http://www.springframework.org/schema/data/mongo"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	 http://www.springframework.org/schema/beans/spring-beans.xsd
	 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
	 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
	 http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd
	 http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
     http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd
     http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd">

	<context:annotation-config />

	<context:component-scan base-package="com....." />

	<mongo:mongo id="mongo" host="localhost" port="27017">
		<mongo:options connectionsPerHost="10" threadsAllowedToBlockForConnectionMultiplier="5" maxWaitTime="12000" />
	</mongo:mongo>

	<mongo:repositories base-package="com...." mongo-template-ref="mongoTemplate" />

	<bean id="mongoTemplate" class="org.springframework.data.document.mongodb.MongoTemplate">
		<constructor-arg name="mongo" ref="mongo" />
		<constructor-arg name="databaseName" value="wcmpp" />
		<constructor-arg name="defaultCollectionName" value="..." />
	</bean>

	<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
</beans>
What am i doing wrong, or is this a bug?

Thanks for your help!