PHP script won't run in the background

Hi all Hope someone can help me with a weird issue I have... I am trying to run a php CLI script in the background and it just won't run - it has a status of Stopped SIGTOU (Trying to write output) - Here are the details OS Mac OS X Lion 10.7.2 PHP PHP 5.3.6 with Suhosin-Patch (cli) (built: Sep 8 2011 19:34:00) Copyright (c) 1997-2011 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies I created a basic script test.php <?php echo 'Hello world'.PHP_EOL; ?> Here are the results of various tests:- Test 1) php -f test.php (Hello world gets displayed) Test 2) php -f test.php >test.log 2>&1 (Hello world gets put into test.log) Test 3) php -f test.php >test.log 2>&1 & --- I get [1]+

Stopped(SIGTTOU)        php -f test.php > test.log 2>&1 -- and the job just sits there doing nothing nothing gets logged however lsof shows the log file is open

It is something to do with php because a similar shell script gets executed no problems in the background... This has me stumped ... any ideas? TIA Rich