If you do mktap --uid=0 --gid=0, t.i.app ignores your setting and stores the uid/gid of the user running mktap. Here's a patch; if I hear no objections, I will commit. Index: twisted/internet/app.py =================================================================== RCS file: /cvs/Twisted/twisted/internet/app.py,v retrieving revision 1.79 diff -u -u -r1.79 app.py --- twisted/internet/app.py 1 Mar 2003 21:58:47 -0000 1.79 +++ twisted/internet/app.py 4 Mar 2003 13:55:05 -0000 @@ -281,8 +282,12 @@ self._authorizer = a self._authorizer.setApplication(self) if platform.getType() == "posix": - self.uid = uid or os.getuid() - self.gid = gid or os.getgid() + if uid is None: + uid = os.getuid() + self.uid = uid + if gid is None: + gid = os.getgid() + self.gid = gid persistenceVersion = 12 -- :(){ :|:&};: