When you stop the SOS, the following statement is logged to the catalina.out file:
... The web application [/52n-sos-webapp] appears to have started a TimerThread named [GT authority factory disposer] via the java.util.Timer API but has failed to stop it. ...
This Commit solves this problem by calling "DeferredAuthorityFactory.exit();".
Merge pull request #135 from CarstenHollmann/fix/stop_GT_CRS_authority_timer

When you stop the SOS, the following statement is logged to the catalina...