<?
$string = "bla bla bla";
echo $string ;
echo "<br>\n";
$salt = '$1$IxhxBBg0$' ;
echo $salt ;
echo "<br>\n";
$crypted = crypt($string, $salt);
echo $crypted;
?>

And then server returns "Document contains no data", apache child which's serving this script segfaults, OS is FreeBSD 3.4-STABLE
and webserver is apache+php+mod_ssl-1.3.12+3.0.15+2.6.2 ...
tail of dmesg looks like that :

pid 10827 (apache), uid 65534: exited on signal 11
pid 11214 (apache), uid 65534: exited on signal 11
pid 11215 (apache), uid 65534: exited on signal 11

The same was in earlier versions of php ...
I used MD5 - 12 char salt string to use md5 encrypt ...