Symfony 1.4 Project Deploy Too Slow

Since we have migrated our code base to Symfony 1.4, we have noticed that it is really slow when deploying projects, compare with running rsync command directly from the command line console. The Symfony framework forum suggested that on line 334 of http://trac.symfony-project.org/browser/branches/1.4/lib/task/sfFilesystem.class.php there is code

usleep(100000);

and if commented out the problem will be gone. Someone has already created a ticket http://trac.symfony-project.org/ticket/8877 for the Symfony team to fix. Hopefully they can get this fixed soon as it really takes a while when deploying projects and will break sites before deployment finishes.