less /var/dt/Xerrors 

error (pid 754): Server unexpectedly died

Thu Nov 22 17:16:21 2007
error (pid 754): Server for display :0 can't be started.

Thu Nov 22 17:22:55 2007
error (pid 758): Server unexpectedly died

Thu Nov 22 17:23:00 2007
error (pid 758): Server for display :0 can't be started.

Thu Nov 22 18:37:13 2007
error (pid 668): Server for display :0 terminated unexpectedly 1
There is no XDISPLAY information for display 0.
Check the OWconfig file(s) and try again.

Fatal server error:
The server will now exit because of configuration problems.

Thu Nov 22 18:37:13 2007
error (pid 668): Server unexpectedly died

Thu Nov 22 18:37:18 2007
error (pid 668): Server for display :0 can't be started.

Thu Nov 22 18:41:51 2007
error (pid 751): Server for display :0 terminated unexpectedly 1
There is no XDISPLAY information for display 0.
Check the OWconfig file(s) and try again.

Fatal server error:
The server will now exit because of configuration problems.

Thu Nov 22 18:41:51 2007
error (pid 751): Server unexpectedly died

Thu Nov 22 18:41:56 2007
error (pid 751): Server for display :0 can't be started.