phpcassa never return(infinite loop)?!!!

[kh jo]

I am trying to use phpcasse


 I use the following example 
 CassandraConn::add_node('localhost', 9160);

 $users = new CassandraCF('rhg', 'Users'); // ColumnFamily

 $users->insert('1', array('email' => 't...@example.com', 'password' =>

 'test')); 
 when I run it, it never returns,,, and apache process eats 100% CPU 
 I am using cassandra 0.7

any idea why this happens?

thanks