Passenger Error in apache2

I installed Passenger successfully . After installing I have added below
three lines in apache2.conf.

LoadModule passenger_module
/usr/lib/ruby/gems/1.8/gems/passenger-2.2.11/ext/apache2/mod_passenger.so
PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-2.2.11
PassengerRuby /usr/bin/ruby1.8

Then I restarted the apache2.

then I have added the below line in /etc/apache2/sites-available/default
<VirtualHost *:80>

  ServerName ipaddress
  ServerAlias www.domain1.com

  DocumentRoot /var/www/testapp/public

</VirtualHost>

Then i restarted the apache2.

Then i run the url in browser . I didn't get any response . But I have
seen the apache error log,
I got below errors are flowing in apache error log

apache Error log:-

[Wed Mar 24 19:41:46 2010] [notice] child pid 26445 exit signal Aborted
(6)
[Wed Mar 24 19:41:46 2010] [notice] child pid 26446 exit signal Aborted
(6)
[Wed Mar 24 19:41:46 2010] [notice] child pid 26447 exit signal Aborted
(6)
[Wed Mar 24 19:41:46 2010] [notice] child pid 26448 exit signal Aborted
(6)
[Wed Mar 24 19:41:46 2010] [notice] child pid 26449 exit signal Aborted
(6)
[ pid=26450 file=Hooks.cpp:625 time=03/24/10 19:41:46.627 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)

[ pid=26451 file=Hooks.cpp:625 time=03/24/10 19:41:47.627 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)
[ pid=26452 file=Hooks.cpp:625 time=03/24/10 19:41:47.627 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)

[ pid=26453 file=Hooks.cpp:625 time=03/24/10 19:41:47.653 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)

[ pid=26454 file=Hooks.cpp:625 time=03/24/10 19:41:47.687 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)

[ pid=26455 file=Hooks.cpp:625 time=03/24/10 19:41:47.687 ]:
  Cannot initialize Passenger in an Apache child process: Could not
connect to the ApplicationPool server: Broken pipe (32) (this warning is
harmless if you're currently restarting or shutting down Apache)