Thanks to those who responded, hope this answers your combined questions... [Sun Sep 28 07:55:57 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec) /usr/sbin/apache2: symbol lookup error: /usr/lib/php5/20060613/pdo_mysql.so: undefined symbol: php_pdo_get_dbh_ce The above is from my apache2 error.log. As a newbie (and fairly clueless), this doesn't mean much to me, however I see it does mention pdo_mysql, which is strange because I don't have MySQL on the machine (I use PostgreSQL), and pdo_mysql is not referenced in the php.ini file. I've tried removing pdo_pgsql from php.ini and removing the PDO package in an attempt to recover, but it still fails -- seems unrecovereable once it happens. I have also posted on php boards. Hope this sheds some light.... slartybartfast wrote: > > I'm trying to set up a server (on Ubuntu Hardy Heron) with SSH, Apache2, > PHP 5.2.x, Ruby, ProFtpd, and PostgreSQL 8.3, and want to use PDO. I set > up everything but the PDO, and all works beautifully - very pleased with > myself as I've never touched Linux before. Then I try to set up PDO, and > I plummet to earth with a thud. > > I run: > pecl install pdo > pecl install pdo_pgsql > > I add to php.ini: > extension=pdo.so > extension=pdo_pgsql.so > > then restart apache: > /etc/init.d/apache2 force-reload > /etc/init.d/apache2 restart > > and I get the message > httpd (no pid file) not running > > and from that point on I could not browse to my webserver, got... > Firefox can't establish a connection to the server at 192.168.0.100. > > Never had that error before until I installed PDO, and was able to get a > connection. So I rebuilt the server from bottom up, documenting every > step, and again all was working until I installed PDO and changed the > php.ini file -- then Apache (or something) breaks. > > Please help -- I'm baffled > -- View this message in context: http://www.nabble.com/PDO-install-kills-webserver-tp19711249p19711749.html Sent from the Apache HTTP Server - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx