context.list() shows Object, but context.lookup() fails with

[johannes.martin]

The following problem occurs while looking up an EJB within an EAR in JBoss 4.0.4SP1.

When I try to lookup an EJB like
... = new InitialContext().lookup("local/SomeService");
a "javax.naming.NameNotFoundException: SomeService not bound" is thrown.

Obvious reason would be that something is wrong with ejb-jar.xml or jboss.xml, but they look right (see below).

Also, when I use the following code to list the contents of "local", the TRXService appears:
ne = new InitialContext.list("local");
while (ne.hasMore()) {
NameClassPair p = (NameClassPair) ne.next();
System.out.println(p.getName() + ":\t" + p.getClassName());
}
...
08:42:03,703 INFO [STDOUT] SomeService@12594563: $Proxy180
...

Also, the lookup seems to work fine with JBoss 3.2.1.

Any hints?

Thanks
Johannes

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jboss.xml:
<?xml version="1.0" encoding="UTF-8"?>

<enterprise-beans>

<ejb-name>SomeService</ejb-name>
<jndi-name>local/SomeService</jndi-name>

</enterprise-beans>

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ejb-jar.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC
"-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN"
"http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>

<display-name>SomeService</display-name>
<ejb-name>SomeService</ejb-name>
<local-home>de.mycompany.SomeServiceHome</local-home>
de.mycompany.SomeService
<ejb-class>de.mycompany.SomeServiceBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<security-identity>

<use-caller-identity />
</security-identity>

</enterprise-beans>

<assembly-descriptor>
<container-transaction>

<ejb-name>SomeService</ejb-name>
<method-name>*</method-name>

<trans-attribute>Required</trans-attribute>
</container-transaction>
<container-transaction>

<ejb-name>SomeService</ejb-name>
<method-name>execute</method-name>

<trans-attribute>RequiresNew</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
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