Marco, Everything worked fine, upto Building Sugar. But when I tried to run Sugar a blank window named "Xnest" opens with the following console o/p: [root@localhost sugar-jhbuild]# ./sugar-jhbuild run Running the installed sugar... Redirecting output to the console, press F3 to open it. Could not init font path element /usr/share/X11/fonts/OTF, removing from list! Could not init font path element /usr/share/X11/fonts/CID/, removing from list! mbpixbuf: no shared memory extension Owner 'root' using port 51948 Traceback (most recent call last):   File "/home/shankar/sugar-jhbuild/build/bin/sugar", line 55, in ?     session.start()   File "/home/shankar/sugar-jhbuild/build/share/sugar/shell/Session.py", line 54, in start     shell.start()   File "/home/shankar/sugar-jhbuild/build/share/sugar/shell/Shell.py", line 53, in start     self._owner = ShellOwner()   File "/home/shankar/sugar-jhbuild/build/share/sugar/shell/Owner.py", line 46, in __init__     self._pservice.register_service(self._service)   File "/home/shankar/sugar-jhbuild/build/lib/python2.4/site-packages/sugar/presence/PresenceService.py", line 542, in register_service     dbus.UInt16 (rs_port), info,)   File "/usr/lib/python2.4/site-packages/dbus/proxies.py", line 25, in __call__     ret = self._proxy_method (*args, **keywords)   File "/usr/lib/python2.4/site-packages/dbus/proxies.py", line 93, in __call__     iter.append(arg)   File "dbus_bindings.pyx", line 1084, in dbus_bindings.MessageIter.append   File "dbus_bindings.pyx", line 1308, in dbus_bindings.MessageIter.append_arrayIndexError: list index out of range I tried to locate "dbus_bindings.pyx" but there was only "dbus_bindings.so" in the directory. Regards, Shankar