This is a test project with the problem, from the quickstart zend project.

I created a testcase in the zip you provided:

class AutoloaderTest extends PHPUnit_Framework_TestCase
{
    public function setUp()
    {   
        $this->application = new Zend_Application(
            APPLICATION_ENV,
            APPLICATION_PATH . '/configs/application.ini'
        );
        $this->application->bootstrap();
    }

    public function testModelAutoloading()
    {   
        $model1 = new Admin_Model_TestAdmin();
        $model2 = new Adminservices_Model_TestAdminservices();
    }
}

This passes. (If the autoloader had been unable to load either class, PHPUnit would have reported the error.)

So, basically, I'm unable to reproduce the error using the code you provided, and running off of current trunk.

Please give a try on this: after install the test application check the url:

public/default/index/index

It will execute this code:

echo 'TEST START HERE: ' . '


';

    echo 'Call model from default module:'. '<br />';
    $modelo = new Default_Model_TestDefault();
    echo $modelo->printName() . '<br /><br />';

    echo 'Call model from admin module:'. '<br />';
    $modelo = new Admin_Model_TestAdmin();
    echo $modelo->printName() . '<br /><br />';

<<<< This will fail to load <<<

    echo 'Call model from adminservices module:'. '<br />';
    $modelo = new Adminservices_Model_TestAdminservices();
    echo $modelo->printName() . '<br /><br />';

Anyone else can reproduce the problem???