Gnome-Do crashes periodically

v0.8.2 on Ubuntu 9.10

Debug log:
[Debug 15:45:03.171] [RelevanceProvider] Successfully saved learned usage data.
[Debug 15:45:06.731] [UniverseManager] Reloading item source "Applications"...
[Debug 15:47:07.199] [UniverseManager] Reloading item source "GNOME Special Locations"...
[Debug 15:47:07.201] [UniverseManager] Reloading item source "Internal GNOME Do Items"...
[Debug 15:47:07.201] [UniverseManager] Reloading item source "GNOME Do Item Sources"...
[Debug 15:47:07.203] [UniverseManager] Reloading item source "Weather Commands"...
[Debug 15:49:07.271] [UniverseManager] Reloading item source "Applications"...
[Debug 15:51:07.607] [UniverseManager] Reloading item source "GNOME Special Locations"...
[Debug 15:51:07.608] [UniverseManager] Reloading item source "Internal GNOME Do Items"...
[Debug 15:51:07.608] [UniverseManager] Reloading item source "GNOME Do Item Sources"...
[Debug 15:51:07.609] [UniverseManager] Reloading item source "Weather Commands"...
[Debug 15:53:07.746] [UniverseManager] Reloading item source "Applications"...
** Message: Unknown errno: No such device

Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.IO.IOException: Win32 IO returned ERROR_GEN_FAILURE. Path: /proc/acpi/battery/BAT0/state
  at System.IO.FileStream.ReadData (IntPtr handle, System.Byte[] buf, Int32 offset, Int32 count) [0x00000]
  at System.IO.FileStream.ReadInternal (System.Byte[] dest, Int32 offset, Int32 count) [0x00000]
  at System.IO.FileStream.Read (System.Byte[] array, Int32 offset, Int32 count) [0x00000]
  at System.IO.StreamReader.ReadBuffer () [0x00000]
  at System.IO.StreamReader.Peek () [0x00000]
  at System.IO.StreamReader.get_EndOfStream () [0x00000]
  at (wrapper remoting-invoke-with-check) System.IO.StreamReader:get_EndOfStream ()
  at BatteryMonitor.BatteryMonitor.UpdateBattStat () [0x00000]
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000]
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Timeout+TimeoutProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)

Kind Regards,
Gary