For me this problem also still occurs, giving the traceback on the terminal from which I have started system-config-printer and an incomplete list of detected network printers. I am using the -0ubuntu6 version which has Tim's patch applied.
For me this problem also still occurs, giving the traceback on the terminal from which I have started system- config- printer and an incomplete list of detected network printers. I am using the -0ubuntu6 version which has Tim's patch applied.