Issue with mod_wsgi since latest update

Hi,
i have a python webpage on my pi which is served trough apache an mod_wsgi (Ubuntu mate 16.04LTS).
Since the latest updates apache crashes with
[wsgi:warn] [pid 31506] mod_wsgi: Compiled for Python/2.7.11. [Sat Sep 23 16:50:41.748247 2017] [mpm_event:notice] [pid 6248:tid 1995714560] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12 configured -- resuming normal operations [Sat Sep 23 16:50:41.748476 2017] [core:notice] [pid 6248:tid 1995714560] AH00094: Command line: '/usr/sbin/apache2' [Sat Sep 23 17:12:02.281234 2017] [wsgi:error] [pid 6251:tid 1934906416] [remote 192.168.178.37:0] mod_wsgi (pid=6251): Target WSGI script '/var/www/html/xxx.wsgi' cannot be loaded as Python module.
Mod_wsgi should be complied for the used python version to work without issues. But there is a warning in the log that python 2.7.12 is installed.
apt-cache policy python python: Installiert: 2.7.11-1 Installationskandidat: 2.7.11-1 Versionstabelle: *** 2.7.11-1 500 500 http://ports.ubuntu.com xenial/main armhf Packages 100 /var/lib/dpkg/status
says that python 2.7.11 is installed, but
python --version Python 2.7.12
says that Python 2.7.12 is installed. Now i´m a bit confused. Can someone give me a hint?
thx
uenz