PHP 5.2.6 not giving or logging any errors

I've got a freshly installed PHP 5.2.6 (with a freshly installed Apache 2.2.8) on a Windows XP SP2 box (yes, I know SP3 is out). Any file with even the slightest error in it (even a missing comma or semicolon) causes PHP to balk. Even a simple test script: <?php echo 'Hello' echo ' World!'; ?> causes PHP to output 0 bytes. No errors output, no errors logged. In php.ini, display_errors = on, error_reporting = E_ALL. I've also tried setting them in the script - ini_set('display_errors',1); error_reporting(E_ALL); Using PHP-CLI nets the same results. PHP stops in less than half a second with zero output. The same script with no error takes 5 seconds and then spits out the output.