bonnin:/tmp# fetchmailconf
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

Traceback (most recent call last):
  File "/usr/bin/fetchmailconf", line 2094, in ?
    root = MainWindow(rcfile)
  File "/usr/bin/fetchmailconf", line 1842, in __init__
    Frame.__init__(self, master)
  File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 2348, in __init__
    Widget.__init__(self, master, 'frame', cnf, {}, extra)
  File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 1829, in __init__
    BaseWidget._setup(self, master, cnf)
  File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 1804, in _setup
    _default_root = Tk()
  File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 1564, in __init__
    self.tk = _tkinter.create(screenName, baseName, className)
_tkinter.TclError: this isn't a Tk applicationcouldn't connect to display ":0.0"