From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050328 Fedora/1.7.6-1.2.5 Description of problem: When I use a terminal(e.g. xterm) on X, I have to wait about 20 seconds after I input "su" in odd situation. The "odd" situation means that executing su 3 times without ending each sessions, i.e.: fooo@bar$ su (input pass) root@bar# su fooo fooo@bar$ su ** freeze for 20 seconds ** While the terminal was freezing, I could observe the following process via another terminal: /usr/X11R6/bin/xauth -f /root/.xauthXXXXXX nlist :0.0 In the same situation without X, there is no freezing, so pam_xauth may cause this problem. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. open terminal on X 2. type su by user foo 3. type su by user root 4. type su by user foo Actual Results: You have to wait for a while after password input. Expected Results: You don't need wait after that. Additional info: Actually, the extent of this bug is really small.