I was travelling and upgraded to 3.11.3 just last week. Now I discovered that the syslog-ng doesn’t work at all. I found discussion about missing folder in /etc for RC. This is not a problem - the folder is there however syslog-ng process is not running. When I tried to start it through /etc/init.d/syslog-ng start (or restart) there is no error displayed but the logging doesn’t work.
It’s difficult to provide more details without logs …