I have tried unsuccessfully to install PHP (4.3.9) with libmcrypt 2.5.7(--with-mycrypt). It seems to build OK but afterwards phpinfo shows mycrypt enabled but doesn't recognize any ciphers. You can look phpinfo() output at http://sol.isu.edu/stuff/test.php and the mycrypt function initialization at http://sol.isu.edu/csdt220/mcrypt.php. If anyone can enlighten me on this one, I would greatly appreciate your help. Don Lopez