Hello list, The code: =============================== import pwd from apolicy.config import config ... from twisted.protocols import basic from twisted.internet import reactor, protocol, task from twisted.application import internet, service ... user = pwd.getpwnam(config.get("main","user")) application = service.Application('apolicy', uid=user[2], gid=user[3]) serviceCollection = service.IServiceCollection(application) address, port = config.get("main", "listen").split(":") internet.TCPServer(int(port), ACLPolicyDaemonFactory(), interface=address).setServiceParent(serviceCollection) =============================== I'm using twistd to start my daemon, the process starts normally and the owner is the user nobody. # ps uaxf | grep nobody nobody 29052 0.1 0.6 13140 6440 ? S 09:11 0:01 /usr/bin/python /usr/bin/twistd -y /usr/lib/python2.4/site-packages/apolicy/server.py -q --logfile /var/log/twistd.log --pidfile=/var/run/twistd.pid My class ACLPolicyDaemonFactory() tries to write a file to test if the path given to my application is writable and has no problems, but the file is created as root. What is the point where the process is already running as nobody? Regards, Miguel