After a do-release-upgrade from 10.04.1 to 12.04.1 I'm seeing this issue too. It causes various HTTP vhosts that use Python applications (in this case Trac) to report:
500 Internal Server Error This is a serious regression affecting production servers. I've increased the bug importance accordingly. The server's central /var/log/apache2/error.log reports: [Fri Jan 18 16:14:49 2013] [notice] SIGHUP received. Attempting to restart apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName [Fri Jan 18 16:14:54 2013] [error] python_init: Python version mismatch, expected '2.7.2+', found '2.7.3'. [Fri Jan 18 16:14:54 2013] [error] python_init: Python executable found '/usr/bin/python'. [Fri Jan 18 16:14:54 2013] [error] python_init: Python path being used '/usr/lib/python2.7/:/usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib/python2.7/lib-old:/usr/lib/python2.7/lib-dynload'. [Fri Jan 18 16:14:54 2013] [notice] mod_python: Creating 8 session mutexes based on 4 max processes and 25 max threads. [Fri Jan 18 16:14:54 2013] [notice] mod_python: using mutex_directory /tmp [Fri Jan 18 16:14:54 2013] [warn] Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366) [Fri Jan 18 16:14:54 2013] [warn] mod_wsgi: Compiled for Python/2.7.2+. [Fri Jan 18 16:14:54 2013] [warn] mod_wsgi: Runtime using Python/2.7.3. [Fri Jan 18 16:14:55 2013] [notice] Apache/2.2.22 (Ubuntu) DAV/2 mod_fcgid/2.3.6 proxy_html/3.0.1 mod_python/3.3.1 Python/2.7.3 mod_ssl/2.2.22 OpenSSL/1.0.1 mod_wsgi/3.3 mod_perl/2.0.5 Perl/v5.14.2 configured -- resuming normal operations ** Changed in: libapache2-mod-python (Ubuntu) Importance: Low => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1073147 Title: Python version mismatch, expected '2.7.2+', found '2.7.3' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libapache2-mod-python/+bug/1073147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
