I have been running Lucid server with an X desktop every since it came out and up until recently the system was robust. I believe following an automatic update I am now getting failures associated with the desktop which cause sudden failure of the X window system, throwing me back to a login screen. I also occasionally get an X freeze where the system is still running but the desktop is dead. I have also experienced incidences of complete system freeze.

Is this a known problem and is there any known solution?