Is this a bug in the Advantage database?

I am running into what seems to me to be a bug in extending the Advantage Database (I know, I know ...). I reported this as a bug but haven't heard anything so far, so I figured you guys would run it.

Working code:

for ($i = 0; $i < 100; $i++)
{
    $connection = ads_connect( 'DataDirectory=\\some\path\;ServerTypes=2;RightsChecking=Off;TrimTrailingSpaces=true;CommType=TCP_IP;', '', '' );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');

    ads_close( $connection );
}

      

        
        
        
      

    

This just repeats up to 100 times, connects to the db, executes the request and disconnects.

Broken code:

for ($i = 0; $i < 100; $i++)
{
    $connection = ads_connect( 'DataDirectory=\\some\path\;ServerTypes=2;RightsChecking=Off;TrimTrailingSpaces=true;CommType=TCP_IP;', '', '' );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');
    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');

    ads_close( $connection );
}

      

        
        
        
      

    

Pay attention to the execution of the second query? This loop fails on the 51st loop (db server limits each application to 50 concurrent connections) with error

Error 6303: Maximum Advantage The connection to the database server was exceeded.

I've tried several other things including this with no success:

for ($i = 0; $i < 100; $i++)
{
    $connection = ads_connect( 'DataDirectory=\\some\path\;ServerTypes=2;RightsChecking=Off;TrimTrailingSpaces=true;CommType=TCP_IP;', '', '' );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');
    ads_free_result( $results );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');
    ads_free_result( $results );

    ads_close( $connection );
}

      

        
        
        
      

    

This, however, DOES fixes the problem and the GENERAL questions are still successful and accurate!

for ($i = 0; $i < 100; $i++)
{
    $connection = ads_connect( 'DataDirectory=\\some\path\;ServerTypes=2;RightsChecking=Off;TrimTrailingSpaces=true;CommType=TCP_IP;', '', '' );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');
    ads_close( $connection );

    $results = ads_do( $connection , 'SELECT TOP 1 * FROM projects');
    ads_close( $connection );   
}

      

        
        
        
      

    

This all seems very strange to me ... any ideas?

EDIT: I'm on PHP 5.2.5 and ADS 8.1