Hi and thanks for reporting this. As you may understand, there is hardly enough information for us to fix this. Does the screen flicker when you enter the first character of the password? Try doing the following:
1. Wait for the system to boot. When you reach the login screen, hit ctr+alt+f1. A terminal will appear. Log in from there. 2. Follow the instructions on http://wiki.ubuntu.com/DebuggingProgramCrash to rebuild gdm with debug symbols. 3. After installing the package you built, do "/etc/init.d/gdm stop" 4. Follow the steps described here: https://wiki.ubuntu.com/Backtrace 5. Reproduce your problem If all goes well, attach the output of gdb and /var/log/gdm/0.log . Thanks ** Changed in: ubuntu-desktop (Ubuntu) Sourcepackagename: ubuntu-desktop => gdm Status: Rejected => Needs Info -- ubuntu 6.06, Correct password fails causes running of program to loop back to password screen https://launchpad.net/bugs/55406 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs