--- a/ucs-4.0-0/management/univention-management-console-frontend/univention-management-console-web-server	
+++ a/ucs-4.0-0/management/univention-management-console-frontend/univention-management-console-web-server	
@@ -854,6 +854,7 @@ class UMC_HTTP_Daemon(DaemonRunner):
 
 		# init daemon runner
 		DaemonRunner.__init__(self, self)
+		self.daemon_context.prevent_core = False
 		self.daemon_context.detach_process = self.options.daemon_mode
 		self.daemon_context.files_preserve = [debug_fd]
 
--- a/ucs-4.0-0/management/univention-management-console/scripts/univention-management-console-module	
+++ a/ucs-4.0-0/management/univention-management-console/scripts/univention-management-console-module	
@@ -69,7 +69,7 @@ if __name__ == '__main__':
 
 	( options, arguments ) = parser.parse_args()
 
-	daemon = DaemonContext( detach_process = False, umask = 0077 )
+	daemon = DaemonContext(detach_process=False, prevent_core=False, umask=0077)
 	daemon.signal_map = {
 		signal.SIGHUP: lambda signal, frame: log_reopen(),
 	}
--- a/ucs-4.0-0/management/univention-management-console/scripts/univention-management-console-server	
+++ a/ucs-4.0-0/management/univention-management-console/scripts/univention-management-console-server	
@@ -105,6 +105,7 @@ class UMC_Daemon( DaemonRunner ):
 
 		# init daemon runner
 		DaemonRunner.__init__( self, self )
+		self.daemon_context.prevent_core = False
 		self.daemon_context.detach_process = self.options.daemon_mode
 		self.daemon_context.umask = 0077
 		self.daemon_context.files_preserve = [ debug_fd ]