I just make a clean install of Fedora11 and ISPConfig 3 from svn. Everything is fine and login as admin. Tried add/remove something also feel good! Then, I change the admin password and try to re-login. Problem comes out here! After changed, I cannot re-login with the new password. Then, I go to webmin to see how's the password changed. I found that there're difference with the encoded password if I create a user with password "123", and other user change the password to "123". So, I think that's the problem that I cannot login after cahnge. Seems the encrypt method in password change is not the one with login & create user page.