I am less experienced with linux os. So please be patient to answer my question. I have recently installed ubuntu 13.04 along with windows 7. I have previously installed 10.04lts and it loads very fast. Now in 13.04 it takes almost 10 minutes to load the os. My system is a dual core processor with 2 gb ram and 1 Gb Nvidia Geforce 9500 GT graphics card. Is there any problem with my istallation that causes the slow down. and the graphics driver installed is not from the Nvidia and how to install the driver from nvidia. Thanks in advance.