Here is the scenario that in most cases reveals the issue on my desktop, but not in 100% cases. I login (my login is a member of admin group if this matters), do something. Then I switch user and login under some regular user account. Use the desktop for a while. The do logoff. The screen goes black as during a regular logoff but it never shows login prompt. Neither Ctrl+Alt+Backspace, nor Ctrl+Alt+Del work here. The only way out is to reset the machine.
Linux Bee 2.6.24-18-generic #1 SMP Wed May 28 20:27:26 UTC 2008 i686 GNU/Linux
Here is the scenario that in most cases reveals the issue on my desktop, but not in 100% cases. I login (my login is a member of admin group if this matters), do something. Then I switch user and login under some regular user account. Use the desktop for a while. The do logoff. The screen goes black as during a regular logoff but it never shows login prompt. Neither Ctrl+Alt+Backspace, nor Ctrl+Alt+Del work here. The only way out is to reset the machine.
Linux Bee 2.6.24-18-generic #1 SMP Wed May 28 20:27:26 UTC 2008 i686 GNU/Linux