Laptop locks up after two users logged on and Ctrl-Alt-F1 or "Switch User"

[ichudov]

I have a Fujitsu Lifebook S6510 running Jaunty Jackalope. All patched to latest. 2 GB of RAM. The bug is as follows:

1) I log on
2) I lock screen
3) My wife would say "Switch user" and log on to a second X session
4) After this anything that gets me out of her X session, like fast user switching, or just pressing Ctrl-Alt-F1, results in a lockup. Keyboard and mouse do not work, Ctrl-Alt-Backspace does not work, Ctrl-Alt-F1..7 does not work etc.

The laptop is up and running, however, as evidenced by ssh, my ssh session into it is maintained.

I gleaned this message:

Mar 23 09:09:42 potato bonobo-activation-server (mywifeuserid-11328): could not associate with desktop session: Failed to connect to socket /tmp/dbus-lXuSGkwSvh: Connection refused

After this the laptop is not usable. I will be happy to attach whatever you guys may want me to attach.