Apache fails to work/hangs when including mod_wsgi.so

Question

I am running Centos 5 on 64 with apache 2.2.

When I include wsgi_module apache restarts ok with no errors, but it fails to serve any requests. It just says waiting in the browser when I access an URL.

Any thoughts of the problem or how can I narrow the problem down?

UPDATE

httpd -M
Loaded Modules:
core_module (static)
authn_file_module (static)
authz_host_module (static)
authz_groupfile_module (static)
authz_user_module (static)
authz_default_module (static)
auth_basic_module (static)
cache_module (static)
mem_cache_module (static)
include_module (static)
filter_module (static)
log_config_module (static)
logio_module (static)
env_module (static)
expires_module (static)
headers_module (static)
setenvif_module (static)
version_module (static)
proxy_module (static)
proxy_connect_module (static)
proxy_ftp_module (static)
proxy_http_module (static)
proxy_scgi_module (static)
proxy_ajp_module (static)
proxy_balancer_module (static)
ssl_module (static)
mpm_prefork_module (static)
http_module (static)
mime_module (static)
dav_module (static)
status_module (static)
autoindex_module (static)
asis_module (static)
info_module (static)
suexec_module (static)
cgi_module (static)
dav_fs_module (static)
negotiation_module (static)
dir_module (static)
actions_module (static)
userdir_module (static)
alias_module (static)
rewrite_module (static)
so_module (static)
dav_svn_module (shared)
authz_svn_module (shared)
bwlimited_module (shared)
php5_module (shared)

Syntax OK

Answer 1

This can happen if you are still loading mod_python into same Apache and mod_python was compiled for different version or mod_python was linking statically to Python.

This and various other issues that can arise are documented in mod_wsgi wiki.

http://code.google.com/p/modwsgi/wiki/InstallationIssues

Check that. Also ensure you set 'LogLevel' directive to at least 'info', instead of 'warn'. This will cause mod_wsgi to log more about what it is doing.