Hi, I'm trying to create a simple daemon with hdaemonize. The deamon runs ok, but i'm having trouble with signals. Here is my test case: import Control.Monad import Control.Concurrent import System.Posix.Syslog import System.Posix.Signals import System.Posix.Daemonize main = daemonize $ do withSyslog "my-test-daemon" [PID] DAEMON $ syslog Info "daemon started" installHandler sigKILL (Catch killHandler) Nothing forever $ threadDelay 1000 killHandler = withSyslog "my-test-daemon" [PID] DAEMON $ do syslog Info "kill signal received" When I run it: $ ./test $ Everything works great: $ ps aux | grep test emanuel 12790 2.6 0.0 6552 852 ? S 20:57 0:00 ./test and: # tail /var/log/daemon.log Nov 14 20:52:06 emanuel-laptop my-test-daemon[12689]: daemon started when I do: $ kill -9 12790 process no longer exist: $ ps aux | grep test $ but/var/log/daemon.log doesn't change: # tail /var/log/daemon.log Nov 14 20:52:06 emanuel-laptop my-test-daemon[12689]: daemon started It looks like my sigKILL handler isn't called, why? Thanks, Emanuel