it's hard for me to know what is the last sudo, i guess it is when i downloaded nautilus actions and nautilus extra, didn't work coz there was a bug, removed them and then removed nautilus that comes by default, by mistake, then reinstalled it but maybe that caused the problem, i installed kivy like this
$ sudo apt-get install python-setuptools python-pygame python-opengl \
python-gst0.10 python-enchant gstreamer0.10-plugins-good cython python-dev \
build-essential libgl1-mesa-dev libgles2-mesa-dev
$ sudo easy_install kivy
but i guess that was on Wednesday not Thursday